Mr. Don Diego, 68, of Manalapan, formerly of Brooklyn, N.Y., died Sept. 17, 2013, at home. He taught at Xaverian High School, Brooklyn, and then at Brick High School, Brick Township, and Kean University, Union. He was predeceased by a brother, Edmund. Surviving are his wife of 30 years, Patricia; and two children, Leonard Don Diego III of New York City, and Laura Don Diego of Manalapan. A funeral liturgy was celebrated at St. Thomas More Church, Manalapan, followed by entombment at Holmdel Mausoleum, Holmdel. Memorial donations may be made to the American Cancer Society.