91, of Bethel Park, on Tuesday, November 27, 2012. Loving wife of George F. Callahan III; beloved mother of George F. Callahan, IV and Patricia A. Callahan; sister of the late Rohland Mansfield; loving grandmother of Jennifer DerVanik (Jeff); aunt of George and John Mansfield. Ruth loved to travel, was a distinguished artist, and a dedicated caregiver for everyone in her family and their friends. Family and friends welcome Friday 2-4 & 6-8 at FREYVOGEL-SLATER FUNERAL DIRECTORS, 112 Fort Couch Road, Bethel Park, (opposite Macy's South Hills Village). Service 10am Saturday at the funeral home.