Biography of John Mohun 1st Baron Dunster 1269-1330
Paternal Family Tree: Mohun
In or before 1269 [his father] John Mohun (age 20) and [his mother] Eleanor Fitzpiers (age 18) were married. He a great x 5 grandson of King Henry I "Beauclerc" England. 
Around 1269 John Mohun 1st Baron Dunster was born to John Mohun (age 20) and Eleanor Fitzpiers (age 19) at Dunster, Somerset.
On 11 Jun 1279 [his father] John Mohun (age 30) died at Dunster, Somerset.
Before 1297 John Mohun 1st Baron Dunster (age 28) and Ada Tiptoft Baroness Dunster (age 21) were married.
In 1297 [his son] Thomas Mohun was born to John Mohun 1st Baron Dunster (age 28) and [his wife] Ada Tiptoft Baroness Dunster (age 22).
On 22 Jul 1298 King Edward "Longshanks" I of England (age 59) defeated the Scottish army led by William Wallace during the Battle of Falkirk at Falkirk [Map] using archers to firstly attack the Scottish shiltrons with the heavy cavalry with infantry completing the defeat.
John de Graham and John Stewart of Bonkyll (age 52) were killed.
The English were described in the Falkirk Roll that lists 111 men with their armorials including:
Guy Beauchamp 10th Earl Warwick (age 26).
Walter Beauchamp (age 55).
Roger Bigod 5th Earl Norfolk (age 53).
Humphrey Bohun 3rd Earl Hereford 2nd Earl Essex (age 49).
Robert Clifford 1st Baron Clifford (age 24).
Hugh "Elder" Despencer 1st Earl Winchester (age 37).
William Ferrers 1st Baron Ferrers of Groby (age 26).
Thomas Berkeley 6th and 1st Baron Berkeley (age 52).
Maurice Berkeley 7th and 2nd Baron Berkeley (age 27).
Henry Grey 1st Baron Grey of Codnor (age 43).
Reginald Grey 1st Baron Grey of Wilton (age 58).
John Grey 2nd Baron Grey of Wilton (age 30).
John Mohun 1st Baron Dunster (age 29).
Simon Montagu 1st Baron Montagu (age 48).
Roger Mortimer 1st Earl March (age 11).
William Ros 1st Baron Ros Helmsley (age 43).
John Segrave 2nd Baron Segrave (age 42).
Nicholas Segrave (age 42).
Robert de Vere 6th Earl of Oxford (age 41).
Alan Zouche 1st Baron Zouche Ashby (age 30).
Thomas Plantagenet 2nd Earl of Leicester, 2nd Earl Lancaster, Earl of Salisbury and Lincoln (age 20).
Henry Plantagenet 3rd Earl of Leicester 3rd Earl Lancaster (age 17).
John Warenne 6th Earl Surrey (age 67).
Henry Percy 9th and 1st Baron Percy (age 25).
Hugh Courtenay 9th Earl Devon (age 21).
Richard Fitzalan 8th Earl Arundel (age 31).
Henry Beaumont Earl Buchan (age 19).
John Capet II Duke Brittany (age 59).
Philip Darcy (age 40).
Robert Fitzroger.
Robert Fitzwalter 1st Baron Fitzwalter (age 51), or possiby a Roger Fitzwalter?.
Aymer de Valence 2nd Earl Pembroke (age 23).
John Wake 1st Baron Wake of Liddell (age 30), and.
Henry Lacy 4th Earl Lincoln, Earl Salisbury (age 47).
William Scrope (age 53) was knighted.
John Moels 1st Baron Moels (age 29) fought.
John Lovell 1st Baron Lovel (age 44) fought.
On 06 Feb 1299 King Edward "Longshanks" I of England (age 59) created a number of new Barons by writ of summons to Edward's 44th Parliament ...
John Ferrers 1st Baron Ferrers of Chartley (age 27) was created 1st Baron Ferrers of Chartley.
John Lovell 1st Baron Lovel (age 45) was created 1st Baron Lovel of Titchmarsh. Joan Ros Baroness Lovel (age 39) by marriage Baroness Lovel of Titchmarsh.
William Ros 1st Baron Ros Helmsley (age 44) was created 1st Baron Ros Helmsley. Maud Vaux Baroness Ros (age 42) by marriage Baroness Ros Helmsley.
William Devereux 1st Baron Devereux Lyonshall (age 55) was created 1st Baron Devereux Lyonshall. Lucy Burnell Baroness Devereux Lyonshall by marriage Baroness Devereux Lyonshall.
Adam Welles 1st Baron Welles (age 50) was created 1st Baron Welles. Joan D'Engayne Baroness Welles and Ughtred by marriage Baroness Welles.
Robert Clinton 1st Baron Clinton (age 41) was created 1st Baron Clinton. Ida Odingsells Baroness Clinton (age 34) by marriage Baroness Clinton.
John Moels 1st Baron Moels (age 30) was created 1st Baron Moels.
The next baronies may not have been created on 06 Feb 1299 but were created in 1299 possibly for Edward's 45th and 46th Parliaments on 10 Apr 1299 and 21 Sep 1299 respectively.
Edmund Deincourt 1st Baron Deincourt (age 49) was created 1st Baron Deincourt.
John Strange 1st Baron Strange Knockin (age 46) was created 1st Baron Strange Knockin. Maud Eiville Baroness Strange Knockin by marriage Baroness Strange Knockin.
John St John Lagenham 1st Baron St John Lagenham (age 49) was created 1st Baron St John Lagenham.
Robert Clifford 1st Baron Clifford (age 24) was created 1st Baron de Clifford. Maud Clare Baroness Clifford Baroness Welles (age 23) by marriage Baroness de Clifford.
Henry Grey 1st Baron Grey of Codnor (age 44) was created 1st Baron Grey of Codnor. Eleanor Courtenay Baroness Grey Codnor by marriage Baroness Grey of Codnor.
John Mohun 1st Baron Dunster (age 30) was created 1st Baron Mohun of Dunster. [his wife] Ada Tiptoft Baroness Dunster (age 24) by marriage Baroness Mohun of Dunster.
Roger Scales 1st Baron Scales was created 1st Baron Scales.
John St John 1st Baron St John Basing (age 25) was created 1st Baron St John Basing.
John Beauchamp 1st Baron Beauchamp Somerset (age 24) was created 1st Baron Beauchamp Somerset.
Alan Zouche 1st Baron Zouche Ashby (age 31) was created 1st Baron Zouche Ashby.
Henry Percy 9th and 1st Baron Percy (age 25) was created 1st Baron Percy of Alnwick. Eleanor Fitzalan Baroness Percy (age 15) by marriage Baroness Percy of Alnwick.
William Grandison 1st Baron Grandison (age 37) was created 1st Baron Grandison. Sibylla Tregoz Baroness Grandison by marriage Baroness Grandison. His brother was also created Baron Grandison on the same day.
Otto Grandison 1st Baron Grandison (age 61) was created 1st Baron Grandison. His brother was also created Baron Grandison on the same day.
Thomas de Multon 1st Baron Multon (age 22) was created 1st Baron Multon Egremont. Eleanor Burgh Baroness Multon Egremont (age 17) by marriage Baroness Multon Egremont.
Around 1300 [his son] John Mohun was born to John Mohun 1st Baron Dunster (age 31) and [his wife] Ada Tiptoft Baroness Dunster (age 25).
In Jul 1300 Robert Clifford 1st Baron Clifford (age 26), Hugh Courtenay 9th Earl Devon (age 23), Simon Fraser, John Mohun 1st Baron Dunster (age 31) and Simon Montagu 1st Baron Montagu (age 50) fought at Caerlaverock during the Siege of Caerlaverock Castle.
Before 09 Mar 1301 seven Earls and 96 Barons signed a letter to the Pope refuting the Pope's claim that Scotland was subject to the Pope's feudal overlordship. The letter was never sent. Those who signed include: John Warenne 6th Earl Surrey (age 70), Thomas Plantagenet 2nd Earl of Leicester, 2nd Earl Lancaster, Earl of Salisbury and Lincoln (age 23), Ralph Monthermer 1st Baron Monthermer (age 31), Humphrey Bohun 4th Earl Hereford 3rd Earl Essex (age 25), Roger Bigod 5th Earl Norfolk (age 56), Richard Fitzalan 8th Earl Arundel (age 34), Guy Beauchamp 10th Earl Warwick (age 29), Aymer de Valence 2nd Earl Pembroke (age 26), William Leybourne 1st Baron Leybourne (age 59), Henry Plantagenet 3rd Earl of Leicester 3rd Earl Lancaster (age 20), William Latimer 1st Baron Latimer of Corby (age 58), Edmund Hastings, John Hastings 2nd Baron Hastings 14th Baron Bergavenny (age 14), Edmund Mortimer 2nd Baron Mortimer of Wigmore (age 50), Fulk Fitzwarin 2nd Baron Fitzwarin (age 16), Henry Percy 9th and 1st Baron Percy (age 27), Robert Fitzwalter 1st Baron Fitzwalter (age 54), John Beauchamp 1st Baron Beauchamp Somerset (age 26), William de Braose 2nd Baron de Braose (age 41), John Botetort 1st Baron Botetort (age 36), Reginald Grey 1st Baron Grey of Wilton (age 61), John Moels 1st Baron Moels (age 32), Thomas Berkeley 6th and 1st Baron Berkeley (age 55), Robert de Vere 5th Earl of Oxford, John Strange 1st Baron Strange Knockin (age 48), Thomas Multon 1st Baron Multon (age 25), Robert Clifford 1st Baron Clifford (age 26), Walter Beauchamp (age 58), Alan Zouche 1st Baron Zouche Ashby (age 33), John Segrave 2nd Baron Segrave (age 45), William Ferrers 1st Baron Ferrers of Groby (age 29), Simon Montagu 1st Baron Montagu (age 51), Piers Mauley, Ralph Neville 1st Baron Neville of Raby (age 38), John Mohun 1st Baron Dunster (age 32), Roger Scales 1st Baron Scales, Thomas Furnival 1st Baron Furnivall (age 41), Hugh Bardolf 1st Baron Bardolf (age 41), Gilbert Talbot 1st Baron Talbot (age 24), William Deincourt 1st Baron Deincourt, Edmund Stafford 1st Baron Stafford (age 28), Walter Fauconberg 1st Baron Fauconberg (age 81). 
Around 20 Feb 1304 a chevauchée of English knights including Robert Clifford 1st Baron Clifford (age 29), William Latimer 2nd Baron Latimer of Corby (age 28), John Mohun 1st Baron Dunster (age 35), John Segrave 2nd Baron Segrave (age 48) and the future Robert "The Bruce" I King Scotland (age 29) attempted, unsuccessfully, to capture Simon Fraser and William Wallace at Happrew, Peebles during the Battle of Happrew.
In or before 1305 John Clavering (age 39) and [his sister-in-law] Hawise Tiptoft (age 34) were married.
In 1305 [his son] Reginald Mohun was born to John Mohun 1st Baron Dunster (age 36) and [his wife] Ada Tiptoft Baroness Dunster (age 30) at Dunster, Somerset.
In 1308 [his brother-in-law] Pain Tiptoft 1st Baron Tibetot (age 28) was created 1st Baron Tibetot.
Before 1313 [his brother-in-law] Pain Tiptoft 1st Baron Tibetot (age 33) and Agnes Ros Baroness Tibetot were married. She by marriage Baroness Tibetot.
On 24 Jun 1314 the Scottish army of Robert "The Bruce" I King Scotland (age 39) including, James "Black" Douglas (age 28), heavily defeated the English army led by King Edward II of England (age 30) at the Battle of Bannockburn.
Gilbert de Clare 8th Earl Gloucester 7th Earl Hertford was killed. Earl Gloucester, Earl Hertford extinct.
John Comyn 4th Lord Baddenoch (age 20), Robert Felton 1st Baron Felton (age 44) and William Vesci were killed.
William Marshal 1st Baron Marshal (age 36) was killed. His son John Marshal 2nd Baron Marshal (age 22) succeeded 2nd Baron Marshal.
Robert Clifford 1st Baron Clifford (age 40) was killed. His son Roger Clifford 2nd Baron Clifford (age 14) succeeded 2nd Baron de Clifford.
John Lovell 2nd Baron Lovel (age 25) was killed. His son John Lovell 3rd Baron Lovel succeeded 3rd Baron Lovel of Titchmarsh.
Henry Bohun was killed by Robert "The Bruce" I King Scotland (age 39). He was buried in Llanthony Secunda Priory, Gloucestershire [Map].
Walter Fauconberg 2nd Baron Fauconberg (age 50) possilby died although his death is also reported as being on 31 Dec 1318.
Bartholomew Badlesmere 1st Baron Badlesmere (age 38), Humphrey Bohun 4th Earl Hereford 3rd Earl Essex (age 38), Goronwy ap Tudur Hen Tudor, Henry Beaumont Earl Buchan (age 35), Aymer de Valence 2nd Earl Pembroke (age 39) and Robert Umfraville 8th Earl Angus (age 37) fought.
[his brother-in-law] Pain Tiptoft 1st Baron Tibetot (age 34) was killed. His son John Tiptoft 2nd Baron Tibetot succeeded 2nd Baron Tibetot.
John Montfort 2nd Baron Montfort (age 23) was killed. Peter Montfort 3rd Baron Montfort (age 23) succeeded 3rd Baron Montfort.
Thomas Grey (age 34) undertook a suicidal charge that contributed to the English defeat and subsequently blemished his career.
William Latimer 2nd Baron Latimer of Corby (age 38) was captured.
Michael Poynings (age 44) was killed.
Around 1315 [his son] Laurence Mohun was born to John Mohun 1st Baron Dunster (age 46) and [his wife] Ada Tiptoft Baroness Dunster (age 40) at Tavistock, Devon.
In or before 1320 [his son] John Mohun (age 20) and [his daughter-in-law] Christiana Segrave (age 17) were married.
Before 1324 [his wife] Ada Tiptoft Baroness Dunster (age 49) died at Penkevile, Rosorrow.
In 1324 [his mother] Eleanor Fitzpiers (age 74) died.
Before 1325 [his son] Reginald Mohun (age 20) and [his daughter-in-law] Elizabeth Fitzwilliam (age 11) were married. They were half second cousin once removed.
On 25 Aug 1330 [his son] John Mohun (age 30) was killed at Boroughbridge [Map]. He was buried at Dunster, Somerset.
On 31 Aug 1330 John Mohun 1st Baron Dunster (age 61) died. His grandson John Mohun 2nd Baron Mohun of Dunster (age 10) succeeded 2nd Baron Mohun of Dunster. Given his young age he became a ward of the King who sold his wardship and marriage to Bishop Henry Burghesh (age 38) who then married him to his niece Joan Burghesh Baroness Dunster (age 11), daugher of his brother Bartholomew "The Elder" Burghesh 1st Baron Burghesh (age 43).
[his daughter] Margaret Mohun was born to John Mohun 1st Baron Dunster and Ada Tiptoft Baroness Dunster.
[his daughter] Eleanor Mohun was born to John Mohun 1st Baron Dunster and Ada Tiptoft Baroness Dunster.
[his daughter] Joan Mohun was born to John Mohun 1st Baron Dunster and Ada Tiptoft Baroness Dunster.
[his son] Payn Mohun was born to John Mohun 1st Baron Dunster and Ada Tiptoft Baroness Dunster.
[his son] Robert Mohun was born to John Mohun 1st Baron Dunster and Ada Tiptoft Baroness Dunster.
[his daughter] William Mohun was born to John Mohun 1st Baron Dunster and Ada Tiptoft Baroness Dunster.
Kings Wessex: Great x 14 Grand Son of King Alfred "The Great" of Wessex
Kings Gwynedd: Great x 10 Grand Son of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Kings Seisyllwg: Great x 12 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 10 Grand Son of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Kings England: Great x 6 Grand Son of King Henry I "Beauclerc" England
Kings Franks: Great x 16 Grand Son of Louis "Pious" King Aquitaine I King Franks
Kings France: Great x 8 Grand Son of Robert "Pious" II King France
Great x 4 Grandfather: William Mohun
Great x 3 Grandfather: William Mohun
Great x 2 Grandfather: Reginald Mohun
Great x 1 Grandfather: Reginald Mohun
Great x 2 Grandmother: Alice Brewer
GrandFather: John Mohun
Great x 2 Grandfather: Geoffrey Fitzpeter 1st Earl Essex
Great x 1 Grandmother: Hawise Fitzpeter
Great x 4 Grandfather: Richard de Clare
Great x 3 Grandfather: Roger Clare 2nd Earl Hertford
Great x 4 Grandmother: Alice Gernon
Great x 2 Grandmother: Aveline Clare Countess Essex
Great x 3 Grandmother: Maud St Hilary Countess Hertford
Father: John Mohun 5 x Great Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandfather: Robert Ferrers 2nd Earl of Derby
Great x 3 Grandfather: William Ferrers 3rd Earl of Derby
Great x 4 Grandmother: Margaret Peverell Countess Derby
Great x 2 Grandfather: William Ferrers 4th Earl of Derby
Great x 4 Grandfather: William de Braose 3rd Baron Bramber
Great x 3 Grandmother: Sybil de Braose Countess Derby
Great x 4 Grandmother: Bertha Gloucester Baroness Bramber
Great x 1 Grandfather: William Ferrers 5th Earl of Derby 3 x Great Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandfather: Ranulf Gernon 4th Earl Chester
Great x 3 Grandfather: Hugh de Kevelioc Gernon 5th Earl Chester Great Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandmother: Matilda Fitzrobert Countess Chester
Grand Daughter of King Henry I "Beauclerc" England
Great x 2 Grandmother: Agnes Gernon Countess Derby 2 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Simon "Chauve" Montfort 4th Count Évreux
Great x 3 Grandmother: Bertrade Montfort Countess Chester
Great x 4 Grandmother: Mathilde Unknown Countess Évreux
GrandMother: Joan Ferrers 4 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 3 Grandfather: John Fitzgilbert
Great x 2 Grandfather: William Marshal 1st Earl Pembroke
Great x 4 Grandfather: Walter of Salisbury 2nd Baron Chitterne
Great x 3 Grandmother: Sybil of Salisbury
Great x 4 Grandmother: Sybilla Chaworth Baroness Chitterne
Great x 1 Grandmother: Sibyl Marshal
Great x 4 Grandfather: Gilbert de Clare 1st Earl Pembroke
Great x 3 Grandfather: Richard "Strongbow" Clare 2nd Earl Pembroke
Great x 4 Grandmother: Isabel Beaumont Countess Pembroke
Great x 2 Grandmother: Isabel Clare Countess Pembroke
Great x 4 Grandfather: Diarmait Macmurrough
Great x 3 Grandmother: Aoife NI Diarmait Macmurrough Countess Pembroke and Buckingham
John Mohun 1st Baron Dunster 6 x Great Grand Son of King Henry I "Beauclerc" England
Great x 2 Grandfather: Herbert Fitzherbert
Great x 1 Grandfather: Piers Fitzherbert
GrandFather: Reginald Fitzpiers
Mother: Eleanor Fitzpiers