It certainly makes more sense for an old man to need a horse for travel rather than to go on foot. Don't you??? I'm tired by 7 PM. If this is Elliot's idea of what Clement's thought was "infirmed", then bring on old age.
BTW-I would steer clear of historicist.com if I were you. They have some rather strange teaching like:
Paul preached in Spain, France and Eng- land. Joseph of Arimathea established a church in England within 5 years of Jesus's death. Others who went to England were Mary Magdalene, Mary, mother of Jesus, Maximin, Trophimus, Lazarus, Simon Zelotes, Clements, Martial, Sidonius, Zacchaeus, and Mary, wife of Cleophas.
Not to mention Elliot goofy comment.