oman Catholic, he served as a Grand Knight of the Knights of Columbus Council 3843 and continued to support pro-life initiatives throughout his life. After his retirement from IBM, Uncle Joe enjoyed visiting with his siblings and their families and he became known as the world-traveler and produce connoisseur of the family. As the youngest of ten children, he was very proud of his Italian heritage and enjoyed sharing stories about his upbringing to the younger generations of his family. He was especially proud of the academic and personal accomplishments of his grand nieces and nephews. He is survived by his brother Anthony (Alfie) Mastromatto, countless nieces and nephews and sisters-in-law Inga Mastromatto (Leonard), Marjorie Mastromatto (Thomas II) and Marie Mastromatto (Albert). He was preceded in death by his siblings Carl, Eleanora Romendio, Leonard, Michael, Thomas, John, George and Albert. Relatives and friends are invited to call Friday, June 21, 2019 from 9:00 to 9:45 AM at St. Joseph Roman Catholic Church, 16 South Spring Garden Street in Ambler. His Requiem Mass will be celebrated at 10:00 AM. Interment will be in Saint Patrick's Cemetery, Norristown. At his request, charitable donations in Joseph Mastromatteo's name may be sent to St. Joseph's parish in Ambler.