William Austin was born in Mississippi. His parents were Anderson and Martha Dacus Austin. His parents moved to MS from SC around 1840. William's mother Martha died around 1854. Where she is buried is unknown. William married Martha E. Scott around 1870. She died sometime in the 1870's when their daughter Cora Alice was very young. Martha Scott Austin is buried in Old Plank Cemetery in an unmarked grave.
William's 2nd wife was Martha Lucretia McClure. She is buried in the Old Herring Cemetery in Poplar Creek.