Mann's father was Milton Mann and his/her mother was Louisa E. Williams. His/her paternal grandfather was Mann; his/her maternal grandfather was Byrd Williams. He/she had three sisters, and also a sibling of unknown gender named Allie, Lumie D., Pearl H. and Mann. He/she had a half-brother, and also two half-siblings of unknown gender named Fletcher, E. G. B. and I. E..