Hello - this is very interesting. My understanding was that only two children of Richard and Frances had descendents, those being Agnes Dennison Hannam and Charlotte Anne Hannam - it's wonderful to discover that another branch survives! All eleven children were: Charles Fitzwilliam (1821-1853) married Mary Henrietta Porter; Vincent Henry (1828-1896) married Mrs Mee of Retford; Thomas Fitzwilliam (1824-1896), married Susan Jane Haddelsey; Richard Fitzwilliam (b.1822/1823), married Elizabeth Dunk; John R (1834-1869), unmarried; Charlotte Anne (1832-1898), married George Haddelsey; Frances (b.1826), unmarried; Agnes Dennison (1839-1922), married John Henry Hutchinson; Eliza (b.1836), unmarried; Augustus (1830-1831); Emily (died young). You mention Clarborough near Sheffield. In fact, there is a Clarborough just outside Retford - Agnes's husband came from there. I have photographs of Charlotte, Charles, Agnes and Frances (Fanny). I also have Richard Hannam's diary from 1825. Do you have any photos or other documents? I'd also be very grateful if you could let me have as much info as you have about Richard Fitzwilliam's children and granchildren etc (dates of birth and death etc, if you have them). Although I don't have dates for Charles Fitzwilliam, I do know that his father was John F of Clixby (d. 1711) who married Anne Trevanion of Louth (d.1695); John's father was William F (b.1629) who married Mary Nevile of Aubourne Hall. Best wishes, Stephen