Mary Jean O'Boyle

Mary Jean O’Boyle (née Poerschman), 85, of Des Plaines, Illinois, passed away on July 24, 2026. Born on January 11, 1941 in Chicago, Illinois, she was the daughter of the late Waldo and Jeanette Poerschman.

Mary Jean graduated from Amundsen High School in Chicago in 1959, where she made many friends. Before her marriage, Mary Jean worked as a secretary at Kemper Insurance in Chicago.

She was the beloved wife of the late Emmett P. O’Boyle, whom she cared for devotedly in the years before his death. She was mother to Jean Marie, Michael, Timothy, and Matthew, and the grandmother of Nicole, Liam, Brendan, and Norah. Her brother Fred predeceased her.

Mary Jean was known for her cooking, baking, and sarcastic wit. She loved a good margarita on the rocks and never missed a chance to enjoy one, even in her 80s. Her sharp sense of humor will be remembered by all who knew her. Services are private. Donations in her memory may be made to the Misericordia Foundation at misericordia.com.