Sir Rory O'Moore (c. 1600 – 16 February 1655), also known Sir Roger O'Moore or O'More or Sir Roger Moore, was an Irish landowner, and is most notable for being one of the four principal organizers of the Irish Rebellion of 1641. Early life O'Moore belonged to an ancient Irish noble family descended from Conall Cernach. He was born in either Laois around 1600, or more likely at Balyna, his father's estate in County Kildare. O'Moore's uncle Rory O'More, Lord of Laois, had fought against the English during the Tudor conquest of Ireland. In 1556 Queen Mary I confiscated the O'Mores' lands and created "Queens County" (modern-day County Laois). Over 180 family members, who were peaceful and had taken no part in any rebellion, were murdered with virtually all of the leaders of Laois and Offaly by the English at a feast at Mullaghmast, County Kildare in 1577, Rory Óg and his wife Maighréad O'Byrne, sister of Fiach MacHugh O'Byrne, were hunted down and killed soon afterwards. This led to the political downfall of the O'Moore family; their estates were given to English settlers. Leader of the Rebellion of 1641

From Wikipedia (CC BY-SA 4.0).

Sir Rory O'Moore (c. 1600 – 16 February 1655), also known Sir Roger O'Moore or O'More or Sir Roger Moore, was an Irish landowner, and is most notable for being one of the four principal organizers of the Irish Rebellion of 1641.