Estrella, John , of Somerville, January 3rd, 2013. Devoted husband of Dorothy Estrella (Peichoto). Loving father of Dianna DeGeorge and the late John F. Estrella. Beloved father in law of Frank DeGeorge and Gayle Estrella. Cherished grandfather of Elicia Estrella, Jennifer Burke and her husband Matthew, David and his wife Becky, Darcy, Courtney , and Justin DeGeorge. Adored great grandfather of Jonathon, David and Carter. Dear brother of the late Joseph and Ernest Estrella. Funeral from the Rogers Funeral Home, 380 Cambridge St., Cambridge Monday at 10:00 am. Funeral Mass at St. Anthony’s Church in Somerville at 11:00 am. Visiting hours Sunday 2 t o 5 pm. In lieu of flowers donations in his memory may be made to The John Estrella Foundation for Cancer Research, 3 Seward Ave., Beverly, MA 01915. Interment at Cambridge Cemetery.