Heȟáka Sápa (Black Elk) (December 1, 1863 – August 19, 1950) was a wičháša wakȟáŋ ("medicine man, holy man") and heyoka of the Oglala Lakota people. He was a second cousin of the war leader Crazy Horse. Black Elk's first wife Katie converted to Roman Catholicism, and they had their three children baptized as Catholics. After Katie's death, in 1904 Black Elk, then in his 40s, converted to Catholicism. He also became a catechist, teaching others about Christianity. He married again and had more children with his second wife; they were also baptized and reared as Catholic.