He was
High Sheriff of Kildare in 1523 and was knighted, but little else is known of him until about 1534. During the
Silken Thomas rebellion, when the Eustace family were deeply divided, due to the close family tie between the Eustace and Fitzgerald families, he remained loyal to
Henry VIII and was duly rewarded for his assistance in putting down the rebellion by being created
Baron Kilcullen in the
Peerage of Ireland in September 1535. He is said to have possessed one-half of
County Wicklow, together with his family's existing possessions in Kildare and
County Meath, and benefited from the
Dissolution of the Monasteries. He played a prominent part in the
Irish Parliament of 1541-2. The Parliament is chiefly remembered for passing the
Crown of Ireland Act 1542 by which Henry VIII took the title
King of Ireland, in preference to the earlier
Lordship of Ireland. As a reward for further actions in putting down the rebellion, he was created
Viscount Baltinglass, a title also in the Peerage of Ireland, on 29 June 1541. His principal residence was
Harristown,
Naas South, County Kildare; he died at New Abbey,
Kilcullen. ==Children==