Birth date listed is actually a christening date. Richard is the son of Samuel Vincent and Elizabeth Comely Vincent. His mother died prior to the company's departure.
Richard is not listed on the roster, but since he is seen in the Provo 2nd Ward, along with his father, at the time of a rebaptism on 26 September 1852, it is assumed that he was one of the "7 persons" indicated to have been traveling with Samuel Vincent on the Deseret News roster.
He is seen as a boarder/farm worker in the Stradling household in the 1880 Utah Census, so he would have died after that time.