Mr. and Mrs. Michael E. and Nancy E. Mulroney of Waterloo recently celebrated 50 years of marriage. They were married Jan. 20, 1971, in Elgin. Michael is retired from the City of Elgin. Nancy is retired from Elgin School District U-46. The couple belongs to Ss. Peter & Paul Catholic Church and are members of Monroe County YMCA. They are the parents of Christopher Mulroney of Gleason, Tenn.; Todd (Tracy) Mulroney of Fort Worth, Texas; and Shawn (Lisa) Mulroney of Wheaton. The Mulroneys also have six grandchildren.