The Eustace Baronetcy of Castle Martin, County Kildare, Ireland was created in the Baronetage of Ireland on 23 December 1685 for Maurice Eustace. He was the son of John Eustace of Castlemartin, of a branch of the old Anglo-Irish family of Fitzeustace whose titles included Viscount Baltinglass and Baron Portlester. Sir Maurice Eustace, Lord Chancellor of Ireland, and his nephew, yet amother Sir Maurice Eustace, were close relatives of the baronet.
Eustace baronets of Castle Martin, County Kildare (1685)
Sir Maurice commanded an infantry regiment in James II's army. He was attainted and the baronetcy was forfeited in 1691.
References
Eustace baronets Wikipedia(Text) CC BY-SA