My wife's ancestors - Fitzwilliam - Contents

William Fitzwilliam

William Fitzwilliam
Lived Dundrum Castle.
Sheriff of Co.Dublin [Ball, vol.2, 1903].
He mar Ismaia Perrers.
Ismaia's mother had inherited Baggotrath Castle, and after her death in 1441 it was taken possession of by an executor to her will of 24 Mar 1441, James Cornwalsh, Chief Baron of the Irish Exchequer.
On 28 Sept 1441 (NOT 1442) Fitzwilliam seized it back for himself and his wife's family, murdering Cornwalsh. See [Ball, vol.2, 1903].
He was pardoned.
He died c.1452.
William and Ismaia had issue:

Thomas Fitzwilliam.
He mar Rosia Bellew.
He died in his father's lifetime, before c.1452.
Thomas and Rosia had issue:

Richard Fitzwilliam.
He mar Margery Holywood [or "Genet Hollywood"].
She was perhaps of the family of Holywood of Artane, Co.Dublin.
He died c.1465.
They had issue:

1. Thomas Fitzwilliam,
   born prob. 1465 ("came of age in 1486").

Above Richard (who married Holywood), [Lodge's Peerage of Ireland, 1754] disagrees with [Ball, vol.2, 1903] on the descent.
Starting with Richard down, they agree again.