my father was Edison Ponthieux, his father was Shelby Ponthieux... My father told us his family was from france, close to . He told us there was a street named after them and some other things He said the french he spoke and the french people here spoke was different because he was from france. He said his people owned the land where the courthouse is in Marksville. His brothers lived in Melville..My dad said his family added a x to the last name he said it did not originally have one told a story of a fued and brothers not wanting to be related so they added the x. So those who have the x came from one brother without the other..my email address is mosquitobitme@yahoo.com Hope I was helpful to u..