Try to find a copy of "The Charles Ferry Family in America" by Edward M. Ferry. It gives the ancestry of Lewis back to Charles Ferry of Springfield. It gives Lewis' parents as Lewis Ferry and Elizabeth Fuller. Lewis Sr. was born 12/5/1757 in Springfield son of Aaron Ferry and Eunice Chapin. Lewis Sr. died in Grafton, NY 8/9/1842. Aaron was the son of Charles. Charles was the grandson of the original Charles Ferry.