Estella Marie Koller Bulgarelli, 74, of Washington, passed away due to natural causes, on June 6, 2021, in her home. She was born on April 17, 1947, in McKees Rocks, a daughter of the late Frank and Estele Payumo Koller. A graduate of Sto-Rox High School, she was Roman Catholic by faith. Mrs. Bulgarelli worked for the United States Postal Service for twenty-five years as a clerk and mail sorter. Estella enjoyed watching Jeopardy, Wheel of Fortune, football and UFC, and going to the casino, but most of all she loved spending time with her family. Her spouse, Donald Darnley passed away on April 3, 2003. Surviving are three sons, Leonard (Tracy) Bulgarelli, Rich (Darla) Bulgarelli, and Robert (Kathrina) Bulgarelli; a brother, Frank Koller; eleven grandchildren, Eric, Alan, Luke, Kira, Kasey, Richie, David, Arion, Ayden, Sierra, and Santana; and three great grandchildren, Ava, Jackson, and Evelyn. At the request of the deceased, all services were private.