Karoli Lwanga was a 19th-century catechist from the Kingdom of Buganda, located in modern Uganda. Serving as a chief page and majordomo in the royal court, he converted to Catholicism in 1885. He is remembered for protecting the young pages under his care from the sexual advances of King Mwanga II. Due to his refusal to renounce his faith, he was executed alongside many of his companions in 1886, becoming one of the Uganda Martyrs.