Mary Thomas, 79, of Valencia passed away on Friday, March 17th, 2023. She was born on April 19th, 1943 in Pittsburgh to the late Harry & Lois (Hoellerman) Smith. Mary graduated from Richland High School, then worked as an assembly tester for 30 years at Laser Drive Inc. She was also a member of the Historical Society of Grove City. Mary loved to sew, which led to her making clothing for Barbies. She also enjoyed working outdoors. Mary was known to be family oriented and a great mother. She was selfless, giving, and brave. She was loved and will be forever missed. Mary is survived by her children, Lisa (Bruce) McKinnis & Leonard “Scott” (Tina) Thomas, three siblings, seven grandchildren & eleven great grandchildren. She was preceded in death by her daughter Lizz Tirk & three siblings. All services will be held privately through SPENCER D. GEIBEL FUNERAL HOME & CREMATION SERVICES. 140 NEW CASTLE RD, BUTLER, PA 16001. WWW.SPENCERDGEIBEL.COM. Mary’s family wants to offer a very warm thank you to her caregiver and daughter in law Tina, for her loving care over the past 21 years.