William "Willie" Rehmann was born on Sunday, January 5, 1879 in Atlantic City, New Jersey. He was the son of Heinrich Frederick and Christina (Roller) Rehmann.

In 1880, he was listed as living with his parents on Virginia Avenue in Atlantic City. The 1890 census gives his employment as an apprentice bottle blower.

William died at the age of 29 in 1908 and is buried in Rose Hill Cemetery in Newfield, New Jersey.