Karen (1) Look up Karen at Dictionary.com
Mongoloid people of Burma, 1759, from Burmese ka-reng "wild, dirty, low-caste man" [OED].
Karen (2) Look up Karen at Dictionary.com
fem. proper name, Danish shortened form of Katherine. Rare before 1928; a top-10 name for girls born in the U.S. 1951-1968.