Mr. and Mrs. Joseph Di Leo of Buffalo celebrated their 50th wedding anniversary with an intimate family dinner. Mr. DiLeo and the former Toni Marie Proietto were married Sept. 18, 1965, in St. Anthony of Padua Catholic Church in Buffalo. He is a retired program manager for the U.S. Postal Service in Buffalo. She is a retired principal at St. Margaret School in Buffalo. They have four children and 10 grandchildren.