Burt

(male) Mainly U.S.: of various origins. In the case of the film actor Burt Lancaster (1913–1994) it is a short form of Burton, but it has also been used as a variant spelling of Bert. The pianist and composer Burt Bacharach (b. 1928) was the son of a Bert Bacharach, and his given name is presumably simply a variation of his father's.