Researching My Ancestors Grier

my father's name is Harry Wayne Grier, his father's name was Venus Eugene Grier. All I know is that the were raised in Palmer, Texas. My Grandfather died in 1957 was married to Eutta Irene Ramsey, deceased in 1999. Would just like to find my roots, mainly for religious reasons, wondering if I have any Jewish heritage, but would be thrilled to discover any more information.