Donald Lee Mercer, 59, passed away on December 18, 2018, in San Antonio, Texas. Donald was born in San Antonio, Texas to Earl F. and Nahoma Mercer on January 30, 1959. Donald is preceded in death by his parents Earl and Nahoma Mercer; sister Angie Patton. He is survived by his son Victor Casias; brothers Earl Mercer, Larry Mercer and Ronald Mercer; sisters Linda Mercer, Doris Mercer and Brenda Mercer; Numerous nieces and nephews. Visitation will be held on Friday, December 28, 2018 at Southside Funeral Home starting at 10:00 a.m. with a Funeral Service at 1:00 p.m. Immediately following services there will be a procession to San Jose Cemetery. Arrangements are entrusted to Southside Funeral Home.