Kerr A Scottish Border surname of local or territorial origin. The Lothian branch spells the name Kerr, and the Roxburgh branch Ker. Sometimes spelt as Carr (of which see above). In 1863 Kerr was the thirty-seventh most numerous surname in Scotland and the estimated number of bearers was 11,700. In 1890 Kerr was numerous in Antrim, it was also to be found in Down and Tyrone. The estimated number of bearers was 6,361. In the United States Kerr is the 721st most numerous surname with an estimated 44,000 bearers. In England and Wales in 1996 Kerr was the 403rd most numerous surname. In Scotland in 1995 Kerr was the 31st most numerous surname.
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