The Rev. and Mrs. Lewis R. Bigler of Williamsville celebrated their 50th wedding anniversary with a renewal of their marriage vows in North Presbyterian Church, Amherst, followed by a family gathering. Bigler and Sylvia Shay were married Sept. 4, 1954, in First Presbyterian Church, Harbor Creek, Pa. He is a marriage and family therapist for Bigler Counseling Association, Snyder, and retired chaplain for Roswell Park Cancer Institute. The couple has three children and five grandchildren.