Mr. and Mrs. Irving Tesmer of Tonawanda celebrated their 50th wedding anniversary with a gathering at Grapevine Restaurant in Amherst. Mr. Tesmer and the former Lorraine Fink were married Feb. 8, 1964, in St. Mary’s Catholic Church in Swormsville. He is a retired professor of Geology at State University College at Buffalo. She is retired director of Education at Buffalo Museum of Science. They have two children and four grandchildren.