ROBERT KELLER, MAY 17, 2008- of Penn Valley, PA. Beloved husband of the late Rozzina Boquin Keller. Devoted father of Stefanie McMahon (Mark) and Peter B. Keller. Loving grandfather of Connor and Andrew McMahon. Also survived by his brother Charles Keller, III. (Karen) and sister-in-law Dolores Dougherty. Funeral Mass Thursday May 22, 10:30 AM St. Margaret Church, 208 N. Narberth Ave., Narberth, PA 19072. Relatives and friends may call at the Church after 9:30 AM. Interment Calvary Cemetery. In lieu of flowers, the family would prefer memorial donations be made to St. Margaret Church at address previously mentioned.