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.
Moors
During the Latin Middle Ages, "Mauri" was used to refer to Berbers and Arabs in the coastal regions of Northwest Africa. The 16th century scholar Leo Africanus (c. 1494–1554) identified the Moors ("Mauri") as the native Berber inhabitants of the former Roman Africa Province (Roman Africans). He described Moors as one of five main population groups on the continent alongside Egyptians, Abyssinians (Abassins), Arabians and Cafri (Cafates).