Kempton appears on a roster that purportedly lists those in attendance at a high priests quorum meeting in Salt Lake City on 23 Apr. 1848. However, many of the names found thereon are of men who did not cross the plains until the summer of 1848. Evidence shows that John Kempton fits into this latter category (see Isaiah Kempton's letter to Aseneth Sweet.) John Kempton's name appears on Salt Lake City Plat B (1848).