Sandra “Sid” Duncan, 79, of Renfrew passed away on Wednesday, November 8, 2023. She was born in Hartford, CT on October 20, 1944 to the late Howard Sr and Dorothy (Rauschenbach) Hilliard. After graduating from Knoch High School, Sid worked as a caregiver for children for over 10 years and then with Walmart for 15 years until retirement. She was known for loving the outdoors, archery, country music, anything pertaining to butterflies, jewelry, a good cheeseburger, being caring, loving, and hardworking. Sandra was a past Tri State Country Western Association member, also a past active Deacon for the Presbyterian Church of Prospect. Sid was the mother of Raymond Jr (Dawn) Duncan, Timothy Duncan, Terry (Berneta) Duncan, and Sandra (Bruce Huff) Grafton; sister of Howard Hilliard and Doug (Maureen) Hilliard; grandmother of Brandon and Cameron Duncan. She was preceded in death by her beloved husband Raymond Duncan Sr in 1993 and her sister Shirley Hilliard. Family and friends will be received on Sunday, November 12, 2023 from 2-4 & 6-8 PM at SPENCER D. GEIBEL FUNERAL HOME & CREMATION SERVICES, 140 NEW CASTLE RD. BUTLER, PA 16001. WWW.SPENCERDGEIBEL.COM. A funeral service will be held on Monday, November 13, 2023 at 11 AM in the Presbyterian Church of Prospect, burial will take place in West Sunbury Cemetery.