Sylvia A. Sherry and Alfred B. Cooper III were united in marriage during a ceremony at 5:30 p.m. Saturday in Hearthstone Manor, prior to a reception. Erie County Judge Michael F. Pietruszka heard the couple's exchange of nuptial vows. The bride is the daughter of Karen M. Glica-Clause and David S. Clause of Buffalo and the bridegroom is the son of Susan I. Rayburn of Dover, Del., and Alfred B. Cooper II of Irving. A graduate of South Park High School and Bryan & Stratton College, the bride is a medical assistant with Buffalo Medical Group. A graduate of Erie Community College, the bridegroom is a graphic designer with Parrinello Printing Inc., Cheektowaga. The newly married couple will make their home in Buffalo.