William M.

William Mark Sidlosky ("Sid"), age 76, of East Stroudsburg, passed away at home on February 18, 2026.

Born on January 15, 1950, in East Stroudsburg, PA, he was the son of the late Alice (Lee) Sidlosky and Frank Sidlosky. He was preceded in death by his brother Frank.

Prior to his retirement, William was employed by East Stroudsburg University for 35 years as a custodian.

William attended East Stroudsburg High School and was a lifelong resident of Monroe County. He was a Roman Catholic and a member of St. Matthew's Church in East Stroudsburg. William enjoyed traveling around the country and to other parts of the world and was a big sports fan.

He is survived by his wife, Ingrid; his daughter, Robyn Maley of Dingmans Ferry and her partner John E. Stone; a sister-in-law, Janet Sidlosky; a nephew, Lee Sidlosky and his wife Jesse and their children Grace and Lea; numerous cousins and several aunts and uncles.

Memorial service for William will be held at the William H. Clark Funeral Home, 1003 Main Street, Stroudsburg on Saturday February 28, 2026. The visitation will begin at 10:00AM and be followed by a prayer service at 11:00AM. Burial will follow at Laurelwood Cemetery. Brunch details will be announced after the service.

Memorial donations may be made to East Stroudsburg University in care of the Office of Advancement.