Nancy J. Koslosky, 87 of Ellsworth, PA passed away on Sunday December 28, 2025 in the Presbyterian Senior Care, Washington.

She was born in Bentleyville, PA on November 18, 1938 a daughter of the late John and Helen Lancy Mihalek.  Nancy graduated from the Bentleyville High School in 1956 and later attended the University of Pittsburgh where she obtained her Secretarial Degree.

Mrs. Koslosky was employed as an Administrative Assistant, along with various other positions for the Bentworth High School and retired after many years of service.

She enjoyed many things in life including bus trips, attending shows in Pittsburgh such as the Symphony, and spending time with her family and friends.  Nancy was famous for her cooking and baking.  Especially her Pierogi's which came in many different flavors.   She had a strong Catholic faith and was a member of the St. Katharine Drexel Parish in Bentleyville for many years, as well as the Catholic Daughters of America, and former member of the Lioness Club

Left to cherish her memory are two sons Jeffrey Koslosky (Donna Combs) of Bentleyville, PA; and Kevin Koslosky (Kendyl Lienard) also of Bentleyville; 3 grandchildren Jason Koslosky, Addison, and Cullan McCabe; several nieces.

Preceding her in death are her husband Carl Koslosky who passed away on August 21, 2011; and her brother John Mihalek Jr.

Family and friends will be received on Friday, January 2, 2026 from 10:00 a.m. to 12:30 p.m. in the Greenlee's Bentleyville Funeral Home 619 Main Street Bentleyville, PA where a Blessing Service will be held at 12:30 with Deacon Al Poroda officiating.  Interment and the Rite of Committal will follow in the Sacred Heart Cemetery, Monongahela, PA.  An online guestbook is available at www.GreenleeFuneralHome.com