Born 18 December 1943, Dartford, Kent, England. He temporarily dropped the "s" and adopted the professional name Keith Richard in 1963. A number of instances of this spelling are also the result of mis-types.
http://www.keithrichards.com/
http://www.keefrichards.com/
http://en.wikipedia.org/wiki/Keith_Richards
http://twitter.com/officialKeef