The Rev. Mark J. Wolski and the bride's great-uncle, Rev. Gus Guppenberger of Cincinnati, Ohio, performed the marriage ceremony for Kathryn L. Beuler and Matthew I. Bonaparte at 2 p.m. Saturday in SS. Peter and Paul Catholic Church, Hamburg. A reception was given in Romanello's South Restaurant. Karen and John Todorof of Orchard Park and Robert and Colleen Beuler of West Seneca are parents of the bride, a graduate of Orchard Park Central High School and Geneseo State College. The bridegroom, son of Marybeth and Andy Bonaparte of Schenectady, is a graduate of Guilderland Central High School and State College of Environmental Science and Forestry. After a trip to St. Lucia, the couple will live in Bethesda, Md., where the bridegroom will begin a postdoctoral fellowship in Uniformed Services University of the Health Sciences after he and the bride complete doctorates in microbiology/immunology in Upstate Medical University, Syracuse, in December.