Oliver seems to have been mentally deficient, his father further extended his influence by appointing Deputies to act on his behalf. The barony became extinct on his death in 1496, but his nephew Thomas, son of his brother Richard, was created Viscount Baltinglass in 1541. Sir Maurice Eustace, a wealthy and influential member of the FitzEustace clan who became Lord Chancellor of Ireland, accepted the title Baron Portlester at the Restoration of Charles II, but then changed his mind, apparently because, like Rowland, he had no legitimate son to succeed him. Reputation Elrington Ball regarded him as perhaps the most important Irish political figure during his 40-year career, more influential even than his son-in-law, the "Great Earl of Kildare". Memorial There is a memorial to him and his third wife Margaret d'Artois in St. Audoen's Church, Dublin, erected by him in gratitude for his preservation from a shipwreck near the site. He founded New Abbey, Kilcullen, where he is buried beside his daughter Alison. His estates passed to his nephew Thomas Eustace, 1st Viscount Baltinglass. References External links Lord Portlester's Chapel at libraryireland.com Roland Fitz Eustace's history on Youtube https://www.youtube.com/watch?v=7rdNDs-WHkg Lord chancellors of Ireland Lord High Treasurers of Ireland Barons in the Peerage of Ireland Peers of Ireland created by Edward IV 1496 deaths 15th-century Irish politicians People of the Tudor period People from County Kildare Year of birth uncertain 15th-century Irish judges