When William Leander Keeley was born on 20 November 1840, in Zanesville, Muskingum, Ohio, United States, his father, William Perry Keeley, was 24 and his mother, Elizabeth Ann Twaddle, was 20. He married Arietta Lavinia Field on 19 November 1866. They were the parents of at least 2 sons and 1 daughter. He lived in Ohio, United States in 1870. He died on 29 November 1921, in Malibu, Los Angeles, California, United States, at the age of 81, and was buried in Los Angeles, Los Angeles, California, United States.