William Falkner Mills was born on October 28, 1841 in Illinois to  Jonathan J Mills and Mary Falkner.

He married Corah Jane Hix on January 27, 1870.

They had the following children Rosa Estella Mils, Mary Sophia Mills, Jonathan Price Mills, Anna Lee Mills, Methodist Hix Mills, William Franklin Mills, Alice Frances Mills, and Martha LaRue Mills.

He died on May 18, 1898.