The Bishop with 150 Wives: Fifty Years as a Missionary is a memoir by Bishop François Xavier Gsell, detailing his decades as a missionary in the Northern Territory of Australia. Published in 1954, the book describes his work establishing the mission on Melville Island and his interactions with the Tiwi people, through which he gained the marriage rights to numerous women as part of his evangelisation strategy. Gsell's memoir provides insights into the challenges of missionary life, as well as observations on Aboriginal culture, customs, and the policies of the time.