Calvert Royal Ancestry

1. Edward III, King of England, d. 1377 m. Philippa of Hainault
2. John of Gaunt, Duke of Lancaster m. Catherine Roet
3. Joan Beaufort m. Ralph Neville, 1st Earl of Westmoreland
4. Richard Neville, 1st Earl of Salisbury, m. Alice Montagu
5. Catherine Neville, m. William Bonville, Baron Harington and Bonville
6. Cecily Bonville, Baroness Harington and Bonville, m. Thomas Grey, 1st Marquess of Dorset
7. Thomas Grey, 2nd Marquess of Dorset m. Margaret Wotton
8. Anne Grey m. Sir Henry Willoughby
9. Margaret Willoughby m. Sir Matthew Arundell. Matthew was son of Sir Thomas Arundell and Margaret Howard. Sir Thomas Arundell was son of Sir John Arundell and Eleanor Grey. Eleanor Grey was daughter of Thomas Grey, 1st Marquess of Dorset and Cecily Bonville above, making Margaret Willoughby and Matthew Arundell cousins
10. Thomas Arundell, 1st Baron Arundell of Wardour m. Anne Philipson
11. Hon. Anne Arundell m. Cecil Calvert, 2nd Baron Baltimore, proprietor of Maryland
12. Charles Calvert, 3rd Baron Baltimore (1637-1715), colonial gov. of MD, m. (2) Mrs. Jane Lowe Sewall of MD
13. Benedict Leonard Calvert, 4th Baron Baltimore, proprietor of MD. Now, #6 above, Cecily Bonville and Thomas Grey had a daughter, Dorothy Grey. she married William Blount, 4th Baron Mountjoy. They had a daughter, Mary Blount, who married Sir Robert Dennis. Mary is 8 generations from Edward:

Here's another Calvert Line:

1. Henry I, King of England, d. 1135 (father was Wm Conqueror) m. Matilda of Scotland
2. (illegitimate by Sybil Corbet) Reginald FitzRoy or de Mortain, Earl of Cornwall, m. Mabel FitzWilliam
3. Maud FitzReginald m. Robert de Beaumont, Count of Meulan, great-great-grandson of Henry I, King of France d. 1060
4. Maud de Beaumont m. William de Vernon, 5th Earl of Devon
5. Mary de Vernon m. Sir Robert Courtenay
6. Sir John Courtenay m. Isabel de Vere
7. Sir Hugh Courtenay m. Eleanor le Despencer
8. Eleanor Courtenay m. Henry Grey, 1st Baron Grey of Codnor
9. Richard Grey, 2nd Baron Grey of Codnor m. Joan FitzPayn
10. Robert FitzPayn (formerly Grey), Baron FitzPayn m. Elizabeth de Brian
11. Isabel FitzPayn m. Richard Poynings, 3rd Baron Poynings
12. Joan Poynings m. Sir Richard Camoys
13. Eleanor Camoys m. Sir Roger Lewknor, son of Sir Thomas Lewknor
14. Elizabeth Lewknor m. John Wroth
15. Thomas Wroth m. Joan Newdigate
16. Robert Wroth m. Jane Hawte
17. Sir Thomas Wroth m. Mary Rich
18. Elizabeth Wroth m. George Mynne
19. Anne Mynne m. George Calvert, 1st Baron Baltimore (c. 1578-1632) promoter of MD
20. Cecil Calvert, 2nd Baron Baltimore, m. Hon. Anne Arundell

Another Calvert Line:

1. Charles II, King of England, d. 1685 m. Catherine of Braganza
2. (illegitimate by Barbara Villiers, Duchess of Cleveland) Charlotte Fitzroy m. Edward Henry Lee, 1st Earl of Lichfield
3. Lady Charlotte Lee m. (1) Benedict Leonard Calvert, 4th Baron Baltimore
4. Charles Calvert, 5th Baron Baltimore, colonial gov. of MD m. Mary Janssen
5. Hon. Caroline Calvert m. Sir Robert Eden (1741-1784), colonial gov. of MD. #4 Charles calvert also had an illegitimate son:
   (illegitimate by ???) Benedict "Swingate" Calvert m. Elizabeth Calvert, dau. of Charles Calvert alias Lazenby alias Butler, colonial gov of MD and Rebecca Gerard. Among the children of Benedict and Elizabeth, Eleanor Calvert married firstly John Parke Custis, stepson of George Washington, and son of Daniel Parke Custis and Martha Dandridge. According to an article in the New England Hist. Gen. Reg., the mother of Benedict "Swingate" Calvert was Melusina de Schulenberg, Countess of Walsingham and illegitimate daughter of George I, King of Great Britain d. 1727 and Ermengarde Melusina de Schulenberg, duchess of Kendal.