Tithe Records for Ireland 1823 to1837 - www.nationalarchives.ie - has a William Simmons farming 20 acres in the townland of Court Clogh, Parish of Castle Ellis and Diocese of Ferns in 1833. There is also a John recorded for Ballywether.
Griffith's land valuations c1853 has the following in Ballywether townland, Civil parish of Kilbrideglynn, Barony of Shelmaliere West, Co. Wexford:
Sarah, Junior, Sarah, John, Junior, John, Senior, Henry. There is no record of a William.
You can access those records at www.askaboutireland.ie/Griffith's Valuations. Both Sites are free.