Paternal Family Tree: Montagu
Maternal Family Tree: Elizabeth Aldersley Baroness Coventry 1580-1653
On 1st March 1766 John Montagu 5th Earl Sandwich [aged 22] and Elizabeth Montague-Dunk were married. She the daughter of George Montagu Dunk 2nd Earl Halifax [aged 49]. He the son of [her grandfather] John Montagu 4th Earl Sandwich [aged 47] and [her grandmother] Dorothy Fane Countess Sandwich [aged 48]. They were fifth cousin once removed.
On 25th April 1772 John Montagu 5th Earl Sandwich [aged 28] and [her mother] Maria Henrietta Powlett were married. She the daughter of [her grandfather] Harry Powlett 6th Duke Bolton [aged 51] and [her grandmother] Katherine Lowther Duchess of Bolton [aged 36]. He the son of John Montagu 4th Earl Sandwich [aged 53] and Dorothy Fane Countess Sandwich [aged 55].
In 1774 Mary Montagu Viscountess Templetown was born to John Montagu 5th Earl Sandwich [aged 29] and Maria Henrietta Powlett.
On 30th March 1779 [her mother] Maria Henrietta Powlett died. She was buried at All Saints Church, Barnwell [Map].
On 16th April 1785 Clotworthy Upton 1st Baron Templetown [aged 64] died. His son John [aged 13] succeeded 2nd Baron Templetown of Templetown in Antrim.
On 30th April 1792 John Montagu 4th Earl Sandwich [aged 73] died. He was buried at All Saints Church, Barnwell [Map]. His son John [aged 48] succeeded 5th Earl Sandwich.
On 7th October 1796 John Upton 2nd Baron Templetown [aged 24] and Mary Montagu Viscountess Templetown [aged 22] were married. She by marriage Baroness Templetown of Templetown in Antrim. She the daughter of John Montagu 5th Earl Sandwich [aged 52] and Maria Henrietta Powlett.
Before 1802. Thomas Lawrence [aged 32]. Portrait of Mary Montagu Viscountess Templetown [aged 27] and her Eldest Son.
On 9th July 1804 [her brother] George Montagu 6th Earl Sandwich [aged 31] and Louisa Lowry-Corry Countess of Sandwich [aged 23] were married. She the daughter of Armar Lowry-Corry 1st Earl Belmore and Harriet Hobart Viscountess Belmore [aged 42]. He the son of [her father] John Montagu 5th Earl Sandwich [aged 60] and [her mother] Maria Henrietta Powlett.
In 1806 [her husband] John Upton 2nd Baron Templetown [aged 34] was created 1st Viscount Templetown in Antrim. Mary Montagu Viscountess Templetown [aged 32] by marriage Viscountess Templetown in Antrim.
1808. William Etty [aged 20]. Portrait of Mary Montagu Viscountess Templetown [aged 34] and Her Eldest Son, after Thomas Lawrence.
On 6th June 1814 John Montagu 5th Earl Sandwich [aged 70] died. He was buried at All Saints Church, Barnwell [Map]. His son George [aged 41] succeeded 6th Earl Sandwich. Louisa Lowry-Corry Countess of Sandwich [aged 33] by marriage Countess Sandwich.
On 21st May 1818 [her brother] George Montagu 6th Earl Sandwich [aged 45] died. He was buried at All Saints Church, Barnwell [Map]. His son John [aged 6] succeeded 7th Earl Sandwich.
In October 1824 Mary Montagu Viscountess Templetown [aged 50] died.
On 21st September 1846 [her former husband] John Upton 2nd Baron Templetown [aged 74] died.
Kings Wessex: Great x 22 Grand Daughter of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 19 Grand Daughter of Owain "Great" King Gwynedd
Kings Seisyllwg: Great x 25 Grand Daughter of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 20 Grand Daughter of Maredudd ap Bleddyn King Powys
Kings Godwinson: Great x 22 Grand Daughter of King Harold II of England
Kings England: Great x 12 Grand Daughter of King Edward III of England
Kings Scotland: Great x 18 Grand Daughter of King William I of Scotland
Kings France: Great x 14 Grand Daughter of King Philip IV of France
Kings Duke Aquitaine: Great x 26 Grand Daughter of Ranulf I Duke Aquitaine
Kings Spain: Great x 18 Grand Daughter of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: Edward Montagu 1st Earl Sandwich 
10 x Great Grandson of King Edward I of England
Great x 3 Grandfather: Edward Montagu 2nd Earl Sandwich 11 x Great Grandson of King Edward I of England
Great x 4 Grandmother: Jemima Crew Countess Sandwich 
12 x Great Granddaughter of King Edward I of England
Great x 2 Grandfather: Edward Montagu 3rd Earl Sandwich 10 x Great Grandson of King Edward III of England
Great x 4 Grandfather: Richard Boyle 2nd Earl Cork 1st Earl Burlington 
Great x 3 Grandmother: Mary Anne Boyle 9 x Great Granddaughter of King Edward III of England
Great x 4 Grandmother: Elizabeth Clifford Countess Burlington 
8 x Great Granddaughter of King Edward III of England
Great x 1 Grandfather: Edward Montagu Viscount Hinchingbrooke 11 x Great Grandson of King Edward III of England
Great x 4 Grandfather: Henry Wilmot 1st Earl Rochester
Great x 3 Grandfather: John Wilmot 2nd Earl Rochester 10 x Great Grandson of King Edward III of England
Great x 4 Grandmother: Anne St John Countess Rochester 
9 x Great Granddaughter of King Edward III of England
Great x 2 Grandmother: Elizabeth Wilmot Countess Sandwich 11 x Great Granddaughter of King Edward III of England
Great x 4 Grandfather: John Malet 9 x Great Grandson of King Edward III of England
Great x 3 Grandmother: Elizabeth Malet Countess Rochester 10 x Great Granddaughter of King Edward III of England
Great x 4 Grandmother: Unton Hawley 9 x Great Granddaughter of King Edward III of England
Grandfather: John Montagu 4th Earl Sandwich 12 x Great Grandson of King Edward III of England
Great x 4 Grandfather: Alexander Popham 8 x Great Grandson of King Edward III of England
Great x 3 Grandfather: Francis Popham 9 x Great Grandson of King Edward III of England
Great x 2 Grandfather: Alexander Popham 10 x Great Grandson of King Edward III of England
Great x 1 Grandmother: Elizabeth Popham Viscountess Hinchingbrooke 11 x Great Granddaughter of King Edward III of England
Father: John Montagu 5th Earl Sandwich 11 x Great Grandson of King Edward III of England
Great x 4 Grandfather: Francis Fane 1st Earl of Westmoreland 
6 x Great Grandson of King Edward III of England
Great x 3 Grandfather: George Fane 7 x Great Grandson of King Edward III of England
Great x 4 Grandmother: Mary Mildmay Countess of Westmoreland 
10 x Great Granddaughter of King Edward I of England
Great x 2 Grandfather: Henry Fane 8 x Great Grandson of King Edward III of England
Great x 1 Grandfather: Charles Fane 1st Viscount Fane 9 x Great Grandson of King Edward III of England
Great x 4 Grandfather: Richard Southcott
Great x 3 Grandfather: Thomas Southcott
Great x 2 Grandmother: Elizabeth Southcott
Grandmother: Dorothy Fane Countess Sandwich 10 x Great Granddaughter of King Edward III of England
Great x 4 Grandfather: John Stanhope 
6 x Great Grandson of King Edward III of England
Great x 3 Grandfather: Philip Stanhope 1st Earl Chesterfield 7 x Great Grandson of King Edward III of England
Great x 4 Grandmother: Cordelia Alington
Great x 2 Grandfather: Alexander Stanhope 8 x Great Grandson of King Edward III of England
Great x 4 Grandfather: John "Lusty" Pakington 
Great x 3 Grandmother: Anne Pakington Countess Chesterfield
Great x 4 Grandmother: Dorothy Smith
Great x 1 Grandmother: Mary Stanhope Viscountess Fane 9 x Great Granddaughter of King Edward III of England
Mary Montagu Viscountess Templetown 12 x Great Granddaughter of King Edward III of England
Great x 4 Grandfather: John Paulet 5th Marquess Winchester 8 x Great Grandson of King Edward III of England
Great x 3 Grandfather: Charles Paulet 1st Duke Bolton 9 x Great Grandson of King Edward III of England
Great x 4 Grandmother: Jane Savage Marchioness Winchester 
8 x Great Granddaughter of King Edward III of England
Great x 2 Grandfather: Charles Paulet 2nd Duke Bolton 9 x Great Grandson of King Edward III of England
Great x 4 Grandfather: Emanuel Scrope 1st Earl of Sunderland 
7 x Great Grandson of King Edward III of England
Great x 3 Grandmother: Mary Scrope 6th Marchioness Winchester 8 x Great Granddaughter of King Edward III of England
Great x 4 Grandmother: Martha Jeanes
Great x 1 Grandfather: Harry Powlett 4th Duke Bolton 10 x Great Grandson of King Edward III of England
Great x 3 Grandfather: William Ramsden
Great x 2 Grandmother: Frances Ramsden
Grandfather: Harry Powlett 6th Duke Bolton 11 x Great Grandson of King Edward III of England
Great x 2 Grandfather: Francis Parry
Great x 1 Grandmother: Catherine Parry
Mother: Maria Henrietta Powlett 12 x Great Granddaughter of King Edward III of England
Great x 4 Grandfather: John Lowther of Lowther Hall 
Great x 3 Grandfather: John Lowther 1st Baronet
Great x 2 Grandfather: Richard Lowther
Great x 3 Grandmother: Mary Fletcher
Great x 1 Grandfather: Robert Lowther
Grandmother: Katherine Lowther Duchess of Bolton 13 x Great Granddaughter of King Edward III of England
Great x 2 Grandfather: Joseph Pennington 2nd Baronet
Great x 1 Grandmother: Katherine Pennington 12 x Great Granddaughter of King Edward III of England
Great x 4 Grandfather: John Lowther
Great x 3 Grandfather: John Lowther 1st Viscount Lonsdale
Great x 4 Grandmother: Elizabeth Bellingham
Great x 2 Grandmother: Margaret Lowther Lady Pennington 11 x Great Granddaughter of King Edward III of England
Great x 4 Grandfather: Henry Thynne 1st Baronet 
9 x Great Grandson of King Edward III of England
Great x 3 Grandmother: Katherine Thynne Viscountess Lonsdale 10 x Great Granddaughter of King Edward III of England
Great x 4 Grandmother: Mary Coventry Lady Thynne Kempsford 