Dominick Sarsfield, 4th Viscount Sarsfield

Dominick Sarsfield, 4th Viscount Sarsfield was an Irish aristocrat and supporter of the Jacobite cause during the Williamite War in Ireland.

Part of a prominent Roman Catholic family of Old English descent who owned lands in County Limerick, Sarsfield was the son of David Sarsfield, 3rd Viscount Sarsfield and succeeded him following his death in 1687.

A leading supporter of the Catholic James II, he was a member of the Irish Council. He sat in the Patriot Parliament of 1689 which took punitive measures against Irish Protestants who had risen in support of James' nephew William III.

In 1691 Sarsfield was attainted by the now Williamite-controlled Irish Parliament, losing his title and estates. He took part in the Flight of the Wild Geese that followed the Jacobite defeat in the war. His younger brother David Sarsfield also went into exile. He died in 1701, while David was killed at the Battle of Villaviciosa in 1710 while serving in the Spanish Army.