St. Agnes’ Episcopal Church History St. Agnes-by-the-Lake Episcopal Church, Algoma, Wisconsin, (originally called Grace Church) United States, is an Anglo-Catholic mission congregation of the Episcopal Diocese of Fond du Lac. The congregation first met in 1877, becoming an organized mission in 1897. The first church service in Ahnapee, the former name of Algoma, was held by the Rt. Rev’d John …