Complex sentence: Mrs. deGravelles, who is Episcopalian, is a member of the Huguenot Society, the Daughters of he American Revolution (for more than fifty years), the Louisiana Genealogical and Historical Society, and Kappa Delta sorority.
Split into simpler sentences: Mrs. deGravelles, who is Episcopalian, is a member of the Huguenot Society. She is also affiliated with the Louisiana Genealogical and Historical Society, and Kappa Delta sorority.