Mr. and Mrs. Thomas Y. Hobart Jr. of Amherst celebrated their 50th wedding anniversary with a renewal of marriage vows at St. Gregory the Great Church in Amherst, followed by a dinner at Transit Valley Country Club. Mr. Hobart and Dorothy A. Gay were married Aug. 10, 1963, in St. Casimir Catholic Church in Buffalo. He is a former teacher for Buffalo Public Schools and retired president for New York State United Teachers; she is a retired teacher for Lancaster Schools and former dance teacher and owner of Center for Dance Arts. They have four children and five grandchildren.