African-American heritage of presidents of the United States
Calvin Coolidge's mother Victoria Moor was claimed to be of a mixed-race family in Vermont. Vaughn noted that her surname was derived from "Moor", a European term for people of North Africa. He did not note that another meaning of her surname is the landscape feature of moor or bog. People's surnames were often based on such landscape features when surnames became generally adopted in 14th century England. Moor/Moore is a common name in England, Scotland, and Ireland.
Rory O'Moore
O'Moore's uncle Ruairí Óg Ó Mórdha, King of Laois, had fought against the English. In 1556 Queen Mary confiscated the O'Mores' lands and created "Queens County" (now County Laois). Over 180 family members, who were peaceful and had taken no part in any rebellion, were killed with virtually all of the leaders of Laois and Offaly by English forces 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 'undertakers'.