John Severn - Greasley, Notts

Does anyone have information about the birth, parents and first marriage of John Severn, born around 1823 at Greasley, Notts. John married Mary Winterbottom on 30/3/1848. He is shown as a widower and his father is shown as John. There are a number of possibilities around 1823/4 - does anyone have definite information?