Richard Butler, 3rd Viscount Mountgarret
Richard Butler, 3rd Viscount Mountgarret (1578–1651) was the son of Edmund Butler, 2nd Viscount Mountgarret and Grany (Grainne) or Grizzel, daughter of Barnaby Fitzpatrick, 1st Baron Upper Ossory. He is best known for his participation in the Irish Confederate Wars on behalf of the Irish Confederate Catholics.