Henderson A Scotish surname meaning son of Henry, their being many septs and families bearing the surname. A small sept held lands in Upper Liddesdale in the Borders. The chief lowland family of the surname were of Fordell in Fifeshire. A branch of the Clan Gunn bears the surname, they are believed to be descendant of Henry, the younger son of George Gunn, a chief of the clan in the fifteenth century. The MacEanruig (anglicised Henderson) of Glencoe are probably descended from Dughall who lived in the early part of the fourteenth century. In 1890 Henderson was principally found in Antrim and Tyrone, and the estimated number of bearers was 3,225. In the United States it is the 81st most numerous surname with an estimated 261,250 bearers. In England and Wales in 1996 it was the 177th most numerous surname. In Scotland in 1995 it was the 27th most numerous surname.