Mr. and Mrs. Robert S. Alessi of Williamsville celebrated their 50th wedding anniversary with family and friends. Mr. Alessi and Judith F. Lazerson were married July 29, 1961, in Buffalo. He is a retired letter carrier for U.S. Postal Service after 38 years of service; she is a retired bank teller after 25 years of service. The couple has two children and two grandchildren.