A reception was given in Buffalo Launch Club after Clarkson University graduates Jennifer L. Fillmore and Michael E. Heim were united in marriage at 2:30 p.m. Saturday in Amherst Lutheran Church. The Rev. Charles Greene performed the ceremony for the daughter of Dennis B. and Carol L. Fillmore of East Amherst and the son of Nancy E. Heim of Amherst and the late Arnold J. Heim. An account executive with Countrywide, Phoenix, Ariz., the bride is a graduate of Clarence Central High School and has an executive master of business administration degree from University at Buffalo. The bridegroom, a business development manager with Rockwell Automation, Phoenix, is a graduate of Williamsville North High School and Erie Community College. After taking a Mexican Riviera cruise, they will be at home in Phoenix.