William Theiss

December 27, 2025

Bekavac Funeral Home and Crematory

Obituaries | The Tube City Almanac | December 29, 2025

William S. Theiss, age 70, of Jefferson Hills, peacefully passed away on Saturday, December 27, 2025.  Born November 25, 1955, in McKeesport, PA, he was a son of the late William and Alice (Kennet) Theiss. William formerly worked as an Operator at Clairton Works, from which he retired, and later was employed by the West Jefferson Hills School District. He was a member of VFW Post 803 and the National Rifle Association, and he enjoyed hunting and fishing.  He is survived by his wife, Debra (Gilmore) Theiss; sons, William (Kelly) Theiss of Jefferson Hills, PA, and J.T.  (Jaclyn) Thomas of Jefferson Hills, PA; his grandchildren Landon Theiss, Kiptyn Theiss, and Clara Renee Thomas; brothers, Thomas (Sherry) Theiss of Penn, PA, and David Theiss of New Ringgold, PA; sister, Shirley (Carl) Klinzing of South Park, PA; and many nieces and nephews.  In addition to his parents, William was preceded in death by sisters, Patricia Belback, Marcia Theiss, and Stephanie Lasich.

 Services are private at the request of the family. Arrangements are by the A.J. Bekavac Funeral Home, 555 Fifth Street Clairton, PA 15025 (412)-233-5700 www.bekavacfuneralhome.com

Originally published December 29, 2025.

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