The marriage ceremony for Jill M. Grunder and Brett T. Williams at 2 p.m. Saturday in Faith United Church of Christ, Boston, was performed by the Rev. Gary V. Burdick and the Rev. Patricia Minnick of St. Paul United Church of Christ, St. Mary's, Ohio. A reception was given in the Rendezvous Room in Statler Towers for the daughter of Robert and Deborah Grunder and the son of Mark and Kim Williams, all of Orchard Park. The bride is an investor reporting representative of M&T Mortgage Corp. The bridegroom attends University at Buffalo School of Medicine. They are graduates of Hamburg Central High School and Canisius College. They will travel to the Caribbean and Florida and will live in Orchard Park.