Paternal Family Tree: Fitzgerald
Maternal Family Tree: Jane Maxwell Duchess Gordon 1748-1812
On 7th June 1824 [his father] William Fitzgerald De Ros 22nd Baron Ros Helmsley [aged 26] and [his mother] Georgiana Lennox Baroness Ros of Helmsley [aged 28] were married. She the daughter of [his grandfather] Charles Lennox 4th Duke Richmond and [his grandmother] Charlotte Gordon Duchess Richmond [aged 55]. They were second cousins. He a great x 3 grandson of King Charles II of England Scotland and Ireland. She a great x 3 granddaughter of King Charles II of England Scotland and Ireland.
On 11th March 1827 Dudley Fitzgerald De Ros 23rd Baron Ros Helmsley was born to William Fitzgerald De Ros 22nd Baron Ros Helmsley [aged 29] and Georgiana Lennox Baroness Ros of Helmsley [aged 31]. He a great x 4 grandson of King Charles II of England Scotland and Ireland. Coefficient of inbreeding 1.58%.
On 29th March 1839 [his uncle] Henry Fitzgerald 21st Baron Ros Helmsley [aged 45] died. His brother [his father] William [aged 41] succeeded 22nd Baron Ros Helmsley. [his mother] Georgiana Lennox Baroness Ros of Helmsley [aged 43] by marriage Baroness Ros Helmsley.
On 12th October 1853 Dudley Fitzgerald De Ros 23rd Baron Ros Helmsley [aged 26] and Elizabeth Egerton Baroness Ros of Helmsley [aged 21] were married at Heaton, Lancashire. She the daughter of Thomas Grosvenor 2nd Earl Wilton [aged 53] and Mary Smith-Stanley Countess Wilton [aged 52].
On 31st July 1854 [his daughter] Mary Fitzgerald De Ros 24th Baroness Ros of Helmsley was born to Dudley Fitzgerald De Ros 23rd Baron Ros Helmsley [aged 27] and [his wife] Elizabeth Egerton Baroness Ros of Helmsley [aged 22]. She married 2nd October 1878 Anthony Lucius Dawson 3rd Earl of Dartrey and had issue.
On 11th August 1858 [his brother-in-law] Arthur Egerton 3rd Earl Wilton [aged 25] and Elizabeth Charlotte Louisa Craven Countess Wilton [aged 22] were married. There was no issue from the marriage. She the daughter of William Craven 2nd Earl Craven [aged 48] and Emily Mary Grimston Countess Craven [aged 42]. He the son of [his father-in-law] Thomas Grosvenor 2nd Earl Wilton [aged 58] and [his mother-in-law] Mary Smith-Stanley Countess Wilton [aged 57].
On 9th August 1862 [his brother-in-law] Seymour Egerton 4th Earl Wilton [aged 23] and Laura Caroline Russell Countess Wilton [aged 20] were married. He the son of [his father-in-law] Thomas Grosvenor 2nd Earl Wilton [aged 62] and [his mother-in-law] Mary Smith-Stanley Countess Wilton.
On 6th January 1874 [his father] William Fitzgerald De Ros 22nd Baron Ros Helmsley [aged 76] died at Old Court, Strangford, County Down. His son Dudley [aged 46] succeeded 23rd Baron Ros Helmsley. [his wife] Elizabeth Egerton Baroness Ros of Helmsley [aged 41] by marriage Baroness Ros Helmsley.
The London Gazette 24071. 2nd March 1874. St. James's Palace, March 2, 1874.
The Queen [aged 54] has been pleased to appoint to be Lords in Waiting in Ordinary to Her Majesty:-
Charles Adolphus, Earl of Dunmore [aged 32], in the room of Gavin, Earl of Breadalbane [aged 22], resigned.
Robert, Earl of Roden [aged 27], in the room of Valentine Augustus, Earl of Kenmare [aged 48], resigned.
Cornwallis, Viscount Hawarden [aged 56], in the room of Albert Edmund, Earl of Morley [aged 30], resigned.
William, Lord Bagot [aged 62], in the room of Thomas, Lord Camoys [aged 76], resigned.
Dudley Charles, Lord De Ros [aged 46], in the room of Charles, Lord Lurgan, resigned.
William Buller Fullerton, Lord Elphinstone [aged 45], in the room of Frederick Henry Paul, Lord Methuen [aged 56], resigned.
Thomas, Lord Walsingham [aged 30], in the room of Arthur, Lord Wrottesley [aged 49], resigned.
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On 2nd October 1878 [his son-in-law] Anthony Lucius Dawson 3rd Earl of Dartrey [aged 23] and [his daughter] Mary Fitzgerald De Ros 24th Baroness Ros of Helmsley [aged 24] were married.
The London Gazette 24843. St. James's Palace, May 10, 1880. THE Queen has been pleased to appoint to be Lords in Waiting in Ordinary to Her Majesty:-
Frederick Henry Paul [aged 62], Lord Methuen in the room of William, Lord Bagot [aged 69], resigned.
Lawrance [aged 35], Earl of Zetland, in the room of Charles Adolphus [aged 39], Earl of Dunmore, resigned.
William [aged 46], Earl of Listowel, in the room of Dudley Charles FitzGerald [aged 53], Lord de Ros, resigned.
Thomas [aged 25], Lord Ribblesdale, in the room of William Buller Fullerton [aged 51], Lord Elphinstone, resigned.
Charles Douglas Richard [aged 39], Lord Sudeley, in the room of John Major [aged 37], Lord Henniker, resigned.
Arthur [aged 55], Lord Wrottesley, in the room of Cornwallis [aged 63], Viscount Hawarden, resigned.
On 7th March 1882 [his father-in-law] Thomas Grosvenor 2nd Earl Wilton [aged 82] died. His son [his brother-in-law] Arthur [aged 49] succeeded 3rd Earl Wilton, 3rd Viscount Grey de Wilton. Elizabeth Charlotte Louisa Craven Countess Wilton [aged 45] by marriage Countess Wilton.
On 18th January 1885 [his brother-in-law] Arthur Egerton 3rd Earl Wilton [aged 52] died. His brother Seymour [aged 45] succeeded 4th Earl Wilton, 4th Viscount Grey de Wilton. Laura Caroline Russell Countess Wilton [aged 43] by marriage Countess Wilton. Baron Grey de Radclyffe in Lancashire extinct.
On 15th December 1891 [his mother] Georgiana Lennox Baroness Ros of Helmsley [aged 96] died.
On 14th March 1892 [his wife] Elizabeth Egerton Baroness Ros of Helmsley [aged 59] died.
On 29th April 1907 Dudley Fitzgerald De Ros 23rd Baron Ros Helmsley [aged 80] died at Old Court, County Down. His daughter Mary [aged 52] succeeded 24th Baroness Ros Helmsley.
Kings Wessex: Great x 21 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 18 Grand Son of Owain "Great" King Gwynedd
Kings Seisyllwg: Great x 22 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 19 Grand Son of Maredudd ap Bleddyn King Powys
Kings Godwinson: Great x 22 Grand Son of King Harold II of England
Kings England: Great x 4 Grand Son of King Charles II of England Scotland and Ireland
Kings Scotland: Great x 4 Grand Son of King Charles II of England Scotland and Ireland
Kings France: Great x 6 Grand Son of Henry IV King France
Kings Duke Aquitaine: Great x 25 Grand Son of Ranulf I Duke Aquitaine
Kings Spain: Great x 11 Grand Son of John II King Aragon
Great x 4 Grandfather: George "Fairy Earl" Fitzgerald 16th Earl of Kildare 
6 x Great Grandson of King Edward III of England
Great x 3 Grandfather: Robert Fitzgerald 7 x Great Grandson of King Edward III of England
Great x 4 Grandmother: Joan Boyle Countess Kildare 
Great x 2 Grandfather: Robert Fitzgerald 19th Earl of Kildare 8 x Great Grandson of King Edward III of England
Great x 4 Grandfather: James Clotworthy 
Great x 3 Grandmother: Mary Clotworthy
Great x 1 Grandfather: James Fitzgerald 1st Duke Leinster 9 x Great Grandson of King Edward III of England
Great x 4 Grandfather: William O'Brien 2nd Earl Inchiquin 13 x Great Grandson of King Edward I of England
Great x 3 Grandfather: William O'Brien 3rd Earl Inchiquin 11 x Great Grandson of King Edward III of England
Great x 4 Grandmother: Margaret Boyle Countess Inchiquin 10 x Great Granddaughter of King Edward III of England
Great x 2 Grandmother: Mary O'Brien Countess Kildare 11 x Great Granddaughter of King Edward III of England
Great x 4 Grandfather: Edward Villiers 
9 x Great Grandson of King Edward III of England
Great x 3 Grandmother: Mary Villiers Countess Inchiquin 10 x Great Granddaughter of King Edward III of England
Great x 4 Grandmother: Frances Howard 
9 x Great Granddaughter of King Edward III of England
Grandfather: Henry Fitzgerald 2 x Great Grandson of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: King Charles II of England Scotland and Ireland 
son of King Charles I of England, Scotland and Ireland
Great x 3 Grandfather: Charles Lennox 1st Duke Richmond son of King Charles II of England Scotland and Ireland
Great x 4 Grandmother: Louise Kéroualle 1st Duchess Portsmouth
Great x 2 Grandfather: Charles Lennox 2nd Duke Richmond Grandson of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: Francis Brudenell 
9 x Great Grandson of King Edward III of England
Great x 3 Grandmother: Anne Brudenell Duchess Richmond 9 x Great Granddaughter of King Edward III of England
Great x 4 Grandmother: Frances Savile 
8 x Great Granddaughter of King Edward III of England
Great x 1 Grandmother: Emilia Mary Lennox Duchess Leinster Great Granddaughter of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: Henry Cadogan 
Great x 3 Grandfather: William Cadogan 1st Earl Cadogan
Great x 4 Grandmother: Bridget Waller
Great x 2 Grandmother: Sarah Cadogan Duchess Richmond
Great x 3 Grandmother: Margaret Cecilia Munter Countess Cadogan
father: William Fitzgerald De Ros 22nd Baron Ros Helmsley 3 x Great Grandson of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: Roger Boyle 1st Earl Orrery
Great x 3 Grandfather: Henry Boyle 10 x Great Grandson of King Edward III of England
Great x 4 Grandmother: Margaret Howard Countess Orrery 9 x Great Granddaughter of King Edward III of England
Great x 2 Grandfather: Henry Boyle 1st Earl Shannon 11 x Great Grandson of King Edward III of England
Great x 1 Grandfather: Robert Boyle Walsingham 12 x Great Grandson of King Edward III of England
Grandmother: Charlotte Boyle 20th Baroness Ros of Helmsley 13 x Great Granddaughter of King Edward III of England
Dudley Fitzgerald De Ros 23rd Baron Ros Helmsley 4 x Great Grandson of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: King Charles II of England Scotland and Ireland son of King Charles I of England, Scotland and Ireland
Great x 3 Grandfather: Charles Lennox 1st Duke Richmond son of King Charles II of England Scotland and Ireland
Great x 4 Grandmother: Louise Kéroualle 1st Duchess Portsmouth
Great x 2 Grandfather: Charles Lennox 2nd Duke Richmond Grandson of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: Francis Brudenell 9 x Great Grandson of King Edward III of England
Great x 3 Grandmother: Anne Brudenell Duchess Richmond 9 x Great Granddaughter of King Edward III of England
Great x 4 Grandmother: Frances Savile 8 x Great Granddaughter of King Edward III of England
Great x 1 Grandfather: George Lennox Great Grandson of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: Henry Cadogan
Great x 3 Grandfather: William Cadogan 1st Earl Cadogan
Great x 4 Grandmother: Bridget Waller
Great x 2 Grandmother: Sarah Cadogan Duchess Richmond
Great x 3 Grandmother: Margaret Cecilia Munter Countess Cadogan
Grandfather: Charles Lennox 4th Duke Richmond 2 x Great Grandson of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: William Kerr 2nd Marquess Lothian 6 x Great Grandson of King Henry VII of England and Ireland
Great x 3 Grandfather: William Kerr 3rd Marquess Lothian 5 x Great Grandson of King James V of Scotland
Great x 4 Grandmother: Jean Campbell Marchioness Lothian 4 x Great Granddaughter of King James V of Scotland
Great x 2 Grandfather: William Henry Kerr 4th Marquess Lothian 6 x Great Grandson of King James V of Scotland
Great x 1 Grandmother: Louisa Kerr 4 x Great Granddaughter of King James I of England and Ireland and VI of Scotland
Great x 4 Grandfather: John Darcy 
10 x Great Grandson of King Edward III of England
Great x 3 Grandfather: Robert Darcy 3rd Earl Holderness 11 x Great Grandson of King Edward III of England
Great x 4 Grandmother: Bridget Sutton 
13 x Great Granddaughter of King Edward I of England
Great x 2 Grandmother: Caroline Darcy Marchioness Lothian 3 x Great Granddaughter of King James I of England and Ireland and VI of Scotland
Great x 4 Grandfather: Meinhart Schomberg 3rd Duke Schomberg 9 x Great Grandson of King Edward III of England
Great x 3 Grandmother: Frederica Schomberg Countess Holderness and Fitzwalter 2 x Great Granddaughter of King James I of England and Ireland and VI of Scotland
Great x 4 Grandmother: Karoline von der Pfalz 
Great Granddaughter of King James I of England and Ireland and VI of Scotland
mother: Georgiana Lennox Baroness Ros of Helmsley 3 x Great Granddaughter of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: George Gordon 1st Duke Gordon 5 x Great Grandson of King James IV of Scotland
Great x 3 Grandfather: Alexander Gordon 2nd Duke Gordon 6 x Great Grandson of King James IV of Scotland
Great x 4 Grandmother: Elizabeth Howard Duchess Gordon 7 x Great Granddaughter of King James II of Scotland
Great x 2 Grandfather: Cosmo George Gordon 3rd Duke Gordon 7 x Great Grandson of King James IV of Scotland
Great x 4 Grandfather: Charles Mordaunt 3rd Earl Peterborough 1st Earl Monmouth 
9 x Great Grandson of King Edward III of England
Great x 3 Grandmother: Henrietta Mordaunt Duchess Gordon 10 x Great Granddaughter of King Edward III of England
Great x 4 Grandmother: Carey Fraser Countess Peterborough and Monmouth
Great x 1 Grandfather: Alexander Gordon 4th Duke Gordon 8 x Great Grandson of King James IV of Scotland
Great x 4 Grandfather: George Gordon 1st Earl Aberdeen
Great x 3 Grandfather: William Gordon 2nd Earl Aberdeen
Great x 2 Grandmother: Catherine Gordon Duchess Gordon 7 x Great Granddaughter of King James IV of Scotland
Great x 4 Grandfather: John Murray 1st Duke Atholl 
5 x Great Grandson of King James IV of Scotland
Great x 3 Grandmother: Susan Murray 6 x Great Granddaughter of King James IV of Scotland
Great x 4 Grandmother: Catherine Hamilton Duchess Atholl 
5 x Great Granddaughter of King James IV of Scotland
Grandmother: Charlotte Gordon Duchess Richmond 9 x Great Granddaughter of King James IV of Scotland
Great x 2 Grandfather: William Maxwell 
Great x 1 Grandmother: Jane Maxwell Duchess Gordon