The History of Hendricks County (Chicago: Interstate Publishing, 1885)--Eel River Township, page 569
William E. Cox, son of Daniel H. and Lucinda Cox, was born June 10, 1832, in Montgomery County, Ind. His parents were natives of Kentucky, who came to Montgomery County, Ind., in an early day. They had a family of nine children, seven still living--William E., Mary E., Nancy J., Joseph A., Lucinda E., George M. and Daniel L. John and James are deceased. Our subject was reared on a farm, and received only a limited education. He has followed farming pursuits through life. He resides in the eastern part of this township. His first wife was Sarah Doyel, daughter of Farmer and Elizabeth Doyel, of Montgomery County. After her death he was married to Sarah Ray, daughter of Carson and Cynthia Ray, also of Montgomery County. To this union was born one child, named Samuel C. He was again married, this time to Mary Plummer, daughter of Joseph and Ann Plummer, the latter deceased. Mr. Cox has served his township as School Director. In politics he affiliates with the Democratic Party. He is a member of the Christian church, and his wife belongs to the Methodist Episcopal Church.