Biography of Dudley Fitzgerald De Ros 23rd Baron Ros Helmsley 1827-1907
Paternal Family Tree: Fitzgerald
Maternal Family Tree: Jane Maxwell Duchess Gordon 1748-1812
On 07 Jun 1824 [his father] William Fitzgerald De Ros 22nd Baron Ros Helmsley (age 26) and [his mother] Georgiana Lennox Baroness Ros Helmsley (age 28) were married. She the daughter of Charles Lennox 4th Duke Richmond and Charlotte Gordon Duchess Richmond (age 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 11 Mar 1827 Dudley Fitzgerald De Ros 23rd Baron Ros Helmsley was born to William Fitzgerald De Ros 22nd Baron Ros Helmsley (age 29) and Georgiana Lennox Baroness Ros Helmsley (age 31). Coefficient of inbreeding 1.58%.
On 29 Mar 1839 [his uncle] Henry Fitzgerald 21st Baron Ros Helmsley (age 45) died. His brother [his father] William Fitzgerald De Ros 22nd Baron Ros Helmsley (age 41) succeeded 22nd Baron Ros Helmsley. [his mother] Georgiana Lennox Baroness Ros Helmsley (age 43) by marriage Baroness Ros Helmsley.
On 12 Oct 1853 Dudley Fitzgerald De Ros 23rd Baron Ros Helmsley (age 26) and Elizabeth Egerton Baroness Ros Helmsley (age 21) were married at Heaton, Lancashire. She the daughter of Thomas Grosvenor 2nd Earl Wilton (age 53) and Mary Smith-Stanley Countess Wilton (age 52). He a great x 4 grandson of King Charles II of England Scotland and Ireland. 
On 31 Jul 1854 [his daughter] Mary Fitzgerald De Ros 24th Baroness Ros Helmsley was born to Dudley Fitzgerald De Ros 23rd Baron Ros Helmsley (age 27) and [his wife] Elizabeth Egerton Baroness Ros Helmsley (age 22).
On 22 Jul 1861 Henry John Roberts (age 34) and [his sister-in-law] Katherine Grey Egerton (age 26) were married. She the daughter of Thomas Grosvenor 2nd Earl Wilton (age 61) and Mary Smith-Stanley Countess Wilton. He the son of Thomas Coke 1st Earl of Leicester and Anne Amelia Keppel Countess Leicester. He a great x 4 grandson of King Charles II of England Scotland and Ireland. 
On 06 Jan 1874 [his father] William Fitzgerald De Ros 22nd Baron Ros Helmsley (age 76) died at Old Court, Strangford, County Down. His son Dudley Fitzgerald De Ros 23rd Baron Ros Helmsley (age 46) succeeded 23rd Baron Ros Helmsley. [his wife] Elizabeth Egerton Baroness Ros Helmsley (age 41) by marriage Baroness Ros Helmsley.
The London Gazette 24071. 02 Mar 1874. St. James's Palace, March 2, 1874.
The Queen (age 54) has been pleased to appoint to be Lords in Waiting in Ordinary to Her Majesty:-
Charles Adolphus, Earl of Dunmore (age 32), in the room of Gavin, Earl of Breadalbane (age 22), resigned.
Robert, Earl of Roden (age 27), in the room of Valentine Augustus, Earl of Kenmare (age 48), resigned.
Cornwallis, Viscount Hawarden (age 56), in the room of Albert Edmund, Earl of Morley (age 30), resigned.
William, Lord Bagot (age 62), in the room of Thomas, Lord Camoys (age 76), resigned.
Dudley Charles, Lord De Ros (age 46), in the room of Charles, Lord Lurgan, resigned.
William Buller Fullerton, Lord Elphinstone (age 45), in the room of Frederick Henry Paul, Lord Methuen (age 56), resigned.
Thomas, Lord Walsingham (age 30), in the room of Arthur, Lord Wrottesley (age 49), resigned.
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 (age 62), Lord Methuen in the room of William, Lord Bagot (age 69), resigned.
Lawrance (age 35), Earl of Zetland, in the room of Charles Adolphus (age 39), Earl of Dunmore, resigned.
William (age 46), Earl of Listowel, in the room of Dudley Charles FitzGerald (age 53), Lord de Ros, resigned.
Thomas (age 25), Lord Ribblesdale, in the room of William Buller Fullerton (age 51), Lord Elphinstone, resigned.
Charles Douglas Richard (age 39), Lord Sudeley, in the room of John Major (age 37), Lord Henniker, resigned.
Arthur (age 55), Lord Wrottesley, in the room of Cornwallis (age 63), Viscount Hawarden, resigned.
On 15 Dec 1891 [his mother] Georgiana Lennox Baroness Ros Helmsley (age 96) died.
On 14 Mar 1892 [his wife] Elizabeth Egerton Baroness Ros Helmsley (age 59) died.
On 29 Apr 1907 Dudley Fitzgerald De Ros 23rd Baron Ros Helmsley (age 80) died at Old Court, County Down. His daughter [his daughter] Mary Fitzgerald De Ros 24th Baroness Ros Helmsley (age 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 England: Great x 4 Grand Son of King Charles II of England Scotland and Ireland
Kings Scotland: Great x 16 Grand Son of Robert "The Bruce" I King Scotland
Kings Franks: Great x 18 Grand Son of Louis VII King Franks
Kings France: Great x 6 Grand Son of Henry IV King France
Great x 4 Grandfather: George "Fairy Earl" Fitzgerald 16th Earl of Kildare 6 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Robert Fitzgerald 7 x Great Grand Son 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 Grand Son 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 Grand Son of King Edward III of England
Great x 4 Grandfather: William O'Brien 2nd Earl Inchiquin 13 x Great Grand Son of King Edward "Longshanks" I of England
Great x 3 Grandfather: William O'Brien 3rd Earl Inchiquin 11 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Margaret Boyle Countess Inchiquin 10 x Great Grand Daughter of King Edward III of England
Great x 2 Grandmother: Mary O'Brien Countess Kildare 11 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Edward Villiers
9 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Mary Villiers Countess Inchiquin 10 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Frances Howard
9 x Great Grand Daughter of King Edward III of England
GrandFather: Henry Fitzgerald 2 x Great Grand Son 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 Grand Son of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: Francis Brudenell
9 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Anne Brudenell Duchess Richmond 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Frances Savile
8 x Great Grand Daughter of King Edward III of England
Great x 1 Grandmother: Emilia Mary Lennox Duchess Leinster Great Grand Daughter 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 Grand Son 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 Grand Son of King Edward III of England
Great x 4 Grandmother: Margaret Howard Countess Orrery 9 x Great Grand Daughter of King Edward III of England
Great x 2 Grandfather: Henry Boyle 1st Earl Shannon 11 x Great Grand Son of King Edward III of England
Great x 1 Grandfather: Robert Boyle Walsingham 12 x Great Grand Son of King Edward III of England
GrandMother: Charlotte Boyle 20th Baroness Ros Helmsley 13 x Great Grand Daughter of King Edward III of England
Dudley Fitzgerald De Ros 23rd Baron Ros Helmsley 4 x Great Grand Son 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 Grand Son of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: Francis Brudenell 9 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Anne Brudenell Duchess Richmond 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Frances Savile 8 x Great Grand Daughter of King Edward III of England
Great x 1 Grandfather: George Lennox Great Grand Son 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 Grand Son of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: William Kerr 2nd Marquess Lothian 6 x Great Grand Son of King Henry VII of England and Ireland
Great x 3 Grandfather: William Kerr 3rd Marquess Lothian 7 x Great Grand Son of King Henry VII of England and Ireland
Great x 4 Grandmother: Jean Campbell Marchioness Lothian 6 x Great Grand Daughter of King Henry VII of England and Ireland
Great x 2 Grandfather: William Henry Kerr 4th Marquess Lothian 8 x Great Grand Son of King Henry VII of England and Ireland
Great x 1 Grandmother: Louisa Kerr 4 x Great Grand Daughter of King James I of England and Ireland and VI of Scotland
Great x 4 Grandfather: John Darcy
10 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Robert Darcy 3rd Earl Holderness 11 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Bridget Sutton
13 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 2 Grandmother: Caroline Darcy Marchioness Lothian 3 x Great Grand Daughter of King James I of England and Ireland and VI of Scotland
Great x 4 Grandfather: Meinhart Schomberg 3rd Duke Schomberg 9 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Frederica Schomberg Countess Holderness and Fitzwalter 2 x Great Grand Daughter of King James I of England and Ireland and VI of Scotland
Great x 4 Grandmother: Karoline von der Pfalz
Great Grand Daughter of King James I of England and Ireland and VI of Scotland
Mother: Georgiana Lennox Baroness Ros Helmsley 3 x Great Grand Daughter of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: George Gordon 1st Duke Gordon 9 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Alexander Gordon 2nd Duke Gordon 10 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Elizabeth Howard Duchess Gordon 9 x Great Grand Daughter of King Edward III of England
Great x 2 Grandfather: Cosmo George Gordon 3rd Duke Gordon 11 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Charles Mordaunt 3rd Earl Peterborough 1st Earl Monmouth
9 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Henrietta Mordaunt Duchess Gordon 10 x Great Grand Daughter 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 Grand Son of King Henry VII of England and Ireland
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 Grand Daughter of King Henry VII of England and Ireland
Great x 4 Grandfather: John Murray 1st Duke Atholl
5 x Great Grand Son of King Henry VII of England and Ireland
Great x 3 Grandmother: Susan Murray 6 x Great Grand Daughter of King Henry VII of England and Ireland
Great x 4 Grandmother: Catherine Hamilton Duchess Atholl
9 x Great Grand Daughter of King Edward III of England
GrandMother: Charlotte Gordon Duchess Richmond 9 x Great Grand Daughter of King Henry VII of England and Ireland
Great x 2 Grandfather: William Maxwell
Great x 1 Grandmother: Jane Maxwell Duchess Gordon