Darlene Elizabeth Nicklas, 76, of Warren, PA, passed away Saturday, March 30, 2024, at Transitions Healthcare Autumn Grove in Harrisville, PA. Darlene was born April 10, 1947, in Warren, the daughter of the late Robert and Jean (Coughlin) Cassell. She was a 1966 graduate of Warren High School. She was a member of the St. Joseph Roman Catholic Church and was involved in the church choir. She especially enjoyed spending time with her family. Darlene is survived by her six children, Tammy Gahr of Warren, Jennifer Riche and husband Mike of Warren, Robert Duckett of Warren, Dennis Duckett and wife Ariane of Tennessee, Mary Barie and husband Chuck of Pittsburgh, and Kathie Stolt and wife Tammy of Warren; eighteen grandchildren; several great grandchildren; two sisters, Lonna Brown of Pittsburgh and Kathie Matthews and husband Ed of Pittsburgh; brother, Tim Cassell and wife Vicky of Pittsburgh; and many nieces and nephews. In addition to her parents, Darlene was preceded in death by twin brother, Dennis Cassell; two brothers, Chuck Cassell and Donnie Cassell. A Memorial Mass will be held at St. Joseph Roman Catholic Church, 600 Penna. Ave. West, Warren, PA, on Friday, April 5, 2024, at 10:00am, with Reverend Richard Tomasone, officiating. Inurnment will follow at the Mausoleum of the Ascension at St. Joseph Cemetery. Those wishing to send online condolences may do so by visiting www.petersonblickfuneralhome.com