In 1907, Guerry was elected Coadjutor Bishop of South Carolina, and was consecrated on September 15, 1907, by Presiding Bishop
Daniel S. Tuttle. He then became the eighth diocesan bishop of the Diocese of South Carolina on April 22, 1908. Guerry was made a
Mason at Sight and was a member of Landmark Lodge No 76, A.F.M. During his episcopacy, he worked to gain racial equality in the diocese. ==Murder==