David F. Mahan, 69 of Malden, formerly of Somerville, June 2, 2014 . Loving father of Sharon Talbot, Robert Mahan, Diane Veroneau and David Mahan. Brother of Judy Oliva, Susan Malizia, Gale Furtado and the late Robert Mahan. Grandfather of Ashley, Amanda, Samantha, Crystal and Kyle and many friends, nieces and nephews. Memorial service will be private.