17 Sep is in September.
On 17 Sep 879 Charles "Simple" III King West Francia was born to Louis "Stammerer" II King Aquitaine III King West Francia and Adelaide Paris Queen Consort Aquitaine and West Francia (age 29).
On 17 Sep 1148 Conan "Fat" Canhiart III Duke Brittany (age 52) died. He had disinherited his son Hoel on his deathbed for being illegitimate. His daughter Bertha Canhiart I Duchess Brittany (age 23) succeeded I Duchess Brittany. Odo II Duke Brittany by marriage Duke Brittany.
Before 17 Sep 1177 Alfonso VIII King Castile (age 21) and Eleanor Plantagenet Queen Consort Castile (age 15) were married. She by marriage Queen Consort Castile. She the daughter of King Henry "Curtmantle" II of England (age 44) and Eleanor of Aquitaine Queen Consort Franks and England (age 55). He the son of Sancho III King Castile and Blanche Ramirez Queen Consort Castile. They were half fourth cousins.
On 17 Sep 1271 King Wenceslaus II of Bohemia and Poland was born to Ottokar "Iron King" II King Bohemia (age 38) and Kunigunda Rostislavna Přemyslovna (age 26).
On 17 Sep 1312 William Donn Burgh 3rd Earl Ulster was born to John Burgh (age 26) and Elizabeth Clare Lady Verdun (age 17). He a great grandson of King Edward "Longshanks" I of England.
On 17 Sep 1322 Robert Dampierre III Count Flanders (age 73) died. His grandson Louis Dampierre II Count Nevers I Count Flanders (age 18) succeeded I Count Flanders.
On 17 Sep 1382 Mary Hungary I Queen Hungary (age 11) was crowned I King Hungary.
Before 17 Sep 1385 Thomas Mowbray 1st Duke of Norfolk (age 17) and Elizabeth Fitzalan Duchess Norfolk (age 19) were married. She by marriage Countess Nottingham. She the daughter of Richard Fitzalan 9th Earl Surrey 11th Earl Arundel (age 39) and Elizabeth Bohun Countess Arundel and Surrey. They were second cousins. He a great x 2 grandson of King Edward "Longshanks" I of England. She a great x 2 granddaughter of King Edward "Longshanks" I of England. 
On 17 Sep 1385 Thomas Mowbray 4th Earl Norfolk 2nd Earl Nottingham was born to Thomas Mowbray 1st Duke of Norfolk (age 17) and Elizabeth Fitzalan Duchess Norfolk (age 19). He a great x 3 grandson of King Edward "Longshanks" I of England. Coefficient of inbreeding 2.69%.
Before 17 Sep 1388 Henry III King Castile (age 8) and Catherine of Lancaster Queen Consort Castile (age 15) were married at Palencia Cathedral. She by marriage Queen Consort Castile. She the daughter of John of Gaunt 1st Duke Lancaster (age 48) and Constance of Castile Duchess of Lancaster (age 34). He the son of John I King Castile (age 30) and Eleanor Barcelona Queen Consort Castile. They were half second cousins. She a granddaughter of King Edward III of England. 
The Chronicle of Adam of Usk. 17 Sep 1388. The duke of Lancaster (age 48) also, claiming the kingdom of Spain in right of his wife (age 34), sailed to that country two years after, with another crusade; and there he lost by the same sickness many of the nobles of the realm of England, and, I may say, the flower of its youthful chivalry. Yet he made peace with the king of Spain, receiving a duchy for the term of his life, and a large sum of gold for his outlay, and giving his daughter (age 15) in marriage to the king’s eldest son (age 8); and so he returned to England1.
Note 1. There is no mention of the duchy in the other chronicles. By the terms of the treaty, Catherine of Lancaster married Henry, prince of the Asturias, in 1393. The duke received the sum of 200,000 crowns and a pension for the lives of himself and his duchess.
On 17 Sep 1398 King Richard II (age 31), the nobility and thousands of spectators assembled at Gosford Green to witness the duel between the future Henry IV (age 31) and Thomas Mowbray 1st Duke of Norfolk (age 30). the future Henry IV (age 31) had had new armour constructed. Edward York 2nd Duke of York 1st Duke Albemarle (age 25) and Thomas Holland 1st Duke Surrey (age 24) managed the proceedings. Just as the duel was to commence King Richard II (age 31) stopped it. After two hours of deliberation King Richard II (age 31) had his decision announced; both men were to be exiled. The future Henry IV (age 31) for ten years,Thomas Mowbray 1st Duke of Norfolk (age 30) forever.
On 19 Oct 1398 Thomas Mowbray 1st Duke of Norfolk (age 30) left England never to return.
On 17 Sep 1409 Martin I King Aragon (age 53) and Margaret Prades Queen Consort Aragon were married. She by marriage Queen Consort Aragon. He the son of Peter IV King Aragon and Eleanor Barcelona Queen Consort Aragon.
On 17 Sep 1415 Nicholas IV Longford (age 42) died.
On 17 Sep 1415 Michael de la Pole 2nd Earl Suffolk (age 54) died of dysentery. His son Michael de la Pole 3rd Earl Suffolk (age 21) succeeded 3rd Earl Suffolk 3C 1385. Elizabeth Mowbray Countess Suffolk (age 21) by marriage Countess Suffolk.
On 17 Sep 1533 Philip Baden 1st Margrave Baden (age 53) died.
On 17 Sep 1558 Walter Devereux 1st Viscount Hereford (age 70) died. His grandson Walter Devereux 1st Earl Essex (age 17) succeeded 2nd Viscount Hereford, 11th Baron Ferrers of Chartley.
On 17 Sep 1563 Henry Manners 2nd Earl of Rutland (age 36) died. He was buried at St Mary the Virgin Church, Bottesford, Leicestershire [Map]. His son Edward Manners 3rd Earl of Rutland (age 14) succeeded 3rd Earl of Rutland 3C 1525, 14th Baron Ros Helmsley. Edward Manners 3rd Earl of Rutland (age 14) became a ward of Queen Elizabeth I of England and Ireland (age 30) and was specially under the charge of William Cecil 1st Baron Burghley (age 43).
After 17 Sep 1563. Alabaster Monument to Henry Manners 2nd Earl of Rutland (deceased) and Margaret Neville Countess Rutland at St Mary the Virgin Church, Bottesford, Leicestershire [Map].
Monument an unusual Table Tomb with their effigies beneath surmounted by effigies of their children. The table may once have been raised in the same way as the one at St Lawrence's Church Snarford [Map] to Thomas St Paul which may be by the same carver.
His arms showing quarterly: 1&4: 
Manners Augmented Arms.
2nd: Top Row: 
Ros Arms, 
Roet Arms, Trusbutt [or Belvoir], Bottom Row: Todeni [Albini ancient], 
Daubeney Arms, 
Badlesmere Arms.
3rd Quarterly: 1 
Thomas Holland 2nd Earl Kent 1350 1397 Arms, 2 
Tiptoft Arms, 3 
Vaux Arms
Powys Arms aka Charlton.
Her arms. Quartered 1&4 
Neville Arms, 2 Thomas Holland 2nd Earl Kent 1350 1397 Arms, 4 Neville Ancient Arms.
Detail of his Leg Garter.
Peacock in Pride ie with its feathers displayed.
Detail of their children.
Detail of the corner of the pediment on which the arms are displayed decorated with fruit and detail of one of the legs of the table.
Detail of his armour, in his right hand a prayer-book, his left hand clutching his sword.
Detail of the St George Pendant Pendant signifying his being a Knight of the Order of the Garter.
Detail of the Unicorn on which his feet rest and Lion on which her feet rest.
The Manners Peacock Crest.
Detail of the Heart locket on her necklace and his St George Pendant.
On 17 Sep 1567 Edward Dudley 5th Baron Dudley was born to Edward Dudley 4th Baron Dudley (age 42) and Katherine Brydges Baroness Dudley.
On 17 Sep 1579 Charles Howard 2nd Earl Nottingham was born to Charles Howard 1st Earl Nottingham (age 43) and Katherine Carey Countess Nottingham (age 29).NOTEXT
On or before 17 Sep 1581 John Warner Bishop was born. He was baptised at St Clement Danes on 17 Sep 1586.
Before 17 Sep 1637 Katherine Clifton Duchess Lennox (age 45) died. She was buried on 17 Sep 1637. Her son James Stewart 4th Duke Lennox 1st Duke Richmond (age 25) succeeded 3rd Baron Clifton of Leighton Bromswold in Huntingdonshire.
Before 17 Sep 1643 Francis Howard 5th Baron Howard was born to Charles Howard (age 28) and Frances Courthope at Great Bookham, Surrey. On 17 Sep 1643 Francis Howard 5th Baron Howard was baptised at Great Bookham, Surrey.NOTEXT
On 17 Sep 1665 Philip IV King Spain (age 60) died. His son Charles "Bewitched" II King Spain (age 3) succeeded II King Spain.
On 17 Sep 1669 James Annesley 2nd Earl Anglesey (age 24) and Elizabeth Manners Countess Anglesey (age 15) were married. She the daughter of John Manners 8th Earl of Rutland (age 65) and Frances Montagu Countess Rutland (age 55). He the son of Arthur Annesley 1st Earl Annesley (age 55) and Elizabeth Altham Countess Anglesey (age 49).
Before 17 Sep 1672 Thomas Wentworth 1st Earl Strafford was born to William Wentworth and Isabella Apsley.
On 17 Sep 1674 Ernest Augustus Hanover 1st Duke York and Albany was born to Ernest Augustus Hanover Elector Brunswick-Lüneburg (age 44) and Sophia Palatinate Simmern (age 43). He a great grandson of King James I of England and Ireland and VI of Scotland.
Evelyn's Diary. 17 Sep 1685. Early next morning we went to Portsmouth [Map], something before his Ma* (age 51) ariv'd. We found all the way full of people, the women in their best dress, in expectation of seeing the King pass by, which he did riding on horseback a good part of the way. We found the Maior and Aldermen with their mace, and in their formalities, standing at the entrance of the fort, a mile on this side of the towne, where the Maior made a speech to the King, and then the guns of the fort were fired, as were those of the garrison so soone as the King was come into Portsmouth. All the souldiers (neere 3000) were drawn up, and lining the streetes and platforme to God's-house (the name of the Governor's house), where, after he had view'd the new fortifications and ship-yard, his Ma* was entertain'd at a magnificent dinner by Sir Slingsby yc Lieut. Governor (age 47), all the gentlemen in his traine setting down at table with him, wch I also had don had I not ben before engag'd to Sir Rob Holmes (age 63), Gov of ye Isle of Wight, to dine with him at a private house, where likewise we had a very sumptuous and plentiful repast of excellent venison, fowle, fish, and fruit.
On 17 Sep 1685 Robert Marsham 1st Baron Romney was born to Robert Marsham 4th Baronet (age 34) and Margaret Bosvile.
Evelyn's Diary. 17 Sep 1685. After dinner I went to wait on his Ma* (age 51) againe, who was pulling on his bootes in ye Townehall, adjoyning the house where he din'd, and then having saluted some ladys, who came to kiss his hand, he tooke horse for Winchester, whither he returned that night. This hall is artificialy hung round with armes of all sorts, like the Hall and Keep at Windsor.
On 17 Sep 1690 William Pierrepont 4th Earl Kingston (age 28) died at Holme Pierrepont [Map]. He was buried at the Church of St Edmund Holme Pierrepont [Map]. His brother Evelyn Pierrepont 1st Duke Kingston upon Hull (age 35) succeeded 5th Earl Kingston upon Hull, 5th Viscount Newark 1C 1627, 5th Baron Pierrepont of Holme Pierrepont 1C 1627. Mary Fielding Countess Kingston upon Hull (age 22) by marriage Countess Kingston upon Hull.
On 17 Sep 1719 Peregrine Osborne 3rd Duke Leeds (age 27) and Anne Seymour Duchess Leeds (age 10) were married. She the daughter of Charles Seymour 6th Duke Somerset (age 57) and Elizabeth Percy Duchess Somerset (age 52). He the son of Peregrine Osborne 2nd Duke Leeds (age 60) and Bridget Hyde Duchess Leeds (age 57).
On 17 Sep 1720 James Wemyss 5th Earl Wemyss (age 21) and Janet Charteris were married. He the son of David Wemyss 4th Earl Wemyss and Anne Douglas.
On 17 Sep 1729 Duke Frederick III of Saxe Coburg Altenburg III (age 30) and Luise Dorothea Saxe Meiningen Duchess Saxe Gotha Altenburg (age 19) were married at Gotha. He the son of Frederick Saxe Coburg Altenburg II Duke Saxe Gotha Altenburg (age 53) and Magdalena Augusta Anhalt Zerbst Anhaltzerbst Duchess Saxe Gotha Altenburg.
In 1738. William Hogarth (age 40). "Night". The fourth and last of a series entitled "The Four Times of the Day".
The Rummer is introduced by Hogarth into his picture of "Night." and that a night of rejoicing, viz. the 29th of May; evident from the bonfires, the oaken bough upon the barber's pole, and the oak leaves fixed in the freemasons' hats. The scene is taken from the narrow part of Charing Cross, as it formerly stood before the way was widened, looking from Whitehall, and exhibits the Rummer Tavern on one side, and the Cardigan's Head on the other; at that time two noted bagnios. We see here the Salisbury flying coach, just set out from the inn, overturning, and its passengers in the utmost fright, increased by the entrance of a burning serpent into the coach, thrown by some unlucky boy. On the other side a waiter is leading home a freemason in his apron, overpowered with liquor, who, by a cut on his face, is shewn to have been in a fray; he is scarcely out of one dilemma, before he is in another, for a maid, from a window in the Rummer Tavern, is showering her favours upon his head. On the right of this man is the house of a barber surgeon, illuminated with candles, whose sign is a hand drawing a tooth, the head in exquisite pain; beneath is written, "Shaving, bleeding, and teeth drawn with a touch." "Ecce signum," behold the sign. An emblem of the operator's abilities. And through the window we have a view of the joint operation of shaving and bleeding, by a drunken apprentice. Beneath is a beggar's bagnio, a place to which such poor wretches as cannot find a better lodging, are obliged to resort in common. Though dark, we are able to discern these poor creatures by the light of the boy's link, which he is blowing in order to kindle a squib. Behind is a nightman, employed in his profession; and further back, a family carrying off their goods by stealth, fearing they should fall a prey to their landlord. Here Jack Sheppard committed his first robbery by stealing two silver spoons.
On September 17th 1738, or shortly before that date is recorded that: "Last Monday morning died Mr Finch, Master of the Rummer Tavern, Charing Cross." - Exposition on the Common Prayer 1737.
On 17 Sep 1744 Albermarle Bertie 9th Earl Lindsey was born to Peregrine Bertie (age 35) and Elizabeth Payne.
On 14 or 17 Sep 1757 Clotworthy Skeffington 1st Earl Massereene (age 42) died. His son Clotworthy Skeffington 2nd Earl Massereene (age 15) succeeded 2nd Earl Massereene, 6th Viscount Massereene, 6th Baron Lough Neagh, 8th Baronet Skeffington of Fisherwick in Staffordshire.
Before 17 Sep 1761 Anthony Ashley-Cooper 4th Earl Shaftesbury (age 50) and Mary Bouverie Countess Shaftesbury (age 30) were married. She by marriage Countess Shaftesbury. He the son of Anthony Ashley-Cooper 3rd Earl Shaftesbury and Jane Ewer Countess Shafetsbury.
On 17 Sep 1761 Anthony Ashley-Cooper 5th Earl Shaftesbury was born to Anthony Ashley-Cooper 4th Earl Shaftesbury (age 50) and Mary Bouverie Countess Shaftesbury (age 30).
On 17 Sep 1766 Lieutenant-General Bennett Noel (age 51) died. He was buried at the Church of St Peter and St Paul, Exton, Rutlandshire [Map]. After 07 Apr 1784 Elizabeth Adams (age 69) was buried with her husband.
Monument sculpted by Joseph Nollekens (age 29).
Lieutenant-General Bennett Noel: Lieutenant-General Bennett Noel and Elizabeth Adams were married. In 1715 he was born to John Noel (age 55) and Elizabeth Sherard (age 36).
Elizabeth Adams: Around 1715 she was born to Robert Adams (age 41). In 1736 Robert Adams (age 62) died. His estate, reputedly worth £100,000 was divided between his two daughters Margaretta Anna Adams and Elizabeth Adams (age 21). On 07 Apr 1784 Elizabeth Adams (age 69) died.
On 17 Sep 1767 Prince Edward Hanover 1st Duke York (age 28) died at York Room, Prince's Palace. Duke of York and Albany 2C 1760 extinct.
On 17 Sep 1768 Edward Lloyd 1st Baron Mostyn was born to Bell Lloyd of Pontryffyd and Bodfach (age 39).
On 17 Sep 1773 George Howard 6th Earl Carlisle was born to Frederick Howard 5th Earl Carlisle (age 25) and Margaret Caroline Leveson-Gower Countess Carlisle.NOTEXT
On 17 Sep 1784 John Tylney 2nd Earl Tylney (age 71) died.
On 17 Sep 1787 William Henry Vane 1st Duke Cleveland (age 21) and Catharine Margaret Powlett Countess Darlington (age 21) were married at her father's seat Hackwood Park, Hampshire. She the daughter of Harry Powlett 6th Duke Bolton (age 66) and Katherine Lowther Duchess of Bolton (age 51). He the son of Henry Vane 2nd Earl Darlington (age 60) and Margaret Lowther Countess Darlington (age 59). They were first cousins. He a great x 2 grandson of King Charles II of England Scotland and Ireland. 
On 17 Sep 1800 William John Cavendish-Scott-Bentinck 5th Duke Portland was born to William Henry Cavendish-Scott-Bentinck 4th Duke Portland (age 32) and Henrietta Scott Duchess Portland (age 26). The date somewhat uncertain according to different sources; Cracroft says 12 Sep 1808 which may be the date he was baptised and 1808 a typo? He was known as John since all the male members of the family were given the first name John.
Before 17 Sep 1818 Welbore Ellis Agar 2nd Earl Normanton (age 40) and Diana Herbert Countess Normanton (age 28) were married. She by marriage Countess Normanton. She the daughter of George Augustus Herbert 11th Earl Pembroke 8th Earl Montgomery (age 59) and Elisabeth Beauclerk. He the son of Charles Agar 1st Earl Normanton and Jane Benson Countess Northampton. She a great x 3 granddaughter of King Charles II of England Scotland and Ireland. 
On 17 Sep 1818 Albermarle Bertie 9th Earl Lindsey (age 74) died. His son George Bertie 10th Earl Lindsey (age 3) succeeded 10th Earl Lindsey.
On 17 Sep 1818 James Charles Agar 3rd Earl Normanton was born to Welbore Ellis Agar 2nd Earl Normanton (age 40) and Diana Herbert Countess Normanton (age 28).
On 17 Sep 1873 Charles Yorke 4th Earl of Hardwicke (age 74) died. His son Charles Philip "Champagne Charlie" Yorke 5th Earl of Hardwicke (age 37) succeeded 5th Earl Hardwicke, 5th Viscount Royston. Sophia Georgiana Robertina Wellesley Countess Hardwicke (age 33) by marriage Countess Hardwicke.St Andrew's Church, Wimpole [Map].
Sophia Georgiana Robertina Wellesley Countess Hardwicke: On 03 Mar 1840 she was born to Henry Richard Charles Wellesley 1st Earl Cowley (age 35). In 1863 Charles Philip "Champagne Charlie" Yorke 5th Earl of Hardwicke (age 26) and Sophia Georgiana Robertina Wellesley Countess Hardwicke (age 22) were married. She the daughter of Henry Richard Charles Wellesley 1st Earl Cowley (age 58). He the son of Charles Yorke 4th Earl of Hardwicke (age 63) and Susan Liddell Countess Hardwicke (age 52). On 03 Jun 1923 Sophia Georgiana Robertina Wellesley Countess Hardwicke (age 83) died.
On 17 Sep 1874 Edmund Roche 1st Baron Fermoy (age 59) died. His son Edward Roche 2nd Baron Fermoy (age 24) succeeded 2nd Baron Fermoy.
On 17 Sep 1931 Maurice Roche 4th Baron Fermoy (age 46) and Ruth Sylvia Gill Baroness Fermoy (age 22) were married. She by marriage Baroness Fermoy. The difference in their ages was 23 years.
On 17 Sep 1949 James Dutton 6th Baron Sherborne (age 76) died. His son Charles Dutton 7th Baron Sherborne (age 38) succeeded 7th Baron Sherborne.
On 17 Sep 1953 Montague Waldegrave 5th Baron Radstock (age 86) died without male issue. Baron Radstock of Castletown in the Queen's County extinct.
On 17 Sep 2013 Walter Temple-Gore-Langton 8th Earl Temple of Stowe (age 88) died. His son James Temple-Gore-Langton 9th Earl Temple of Stowe (age 58) succeeded 9th Earl Temple of Stowe.
