Five Figure Fanwork Exchange

I think "The Uten Sanzo" is probably as clear as you can get for Saiyuki since there's no canon information about him or any possible successors/his predecessors. Maybe "The deceased Uten Sanzo," but anyone who's read or watched Saiyuki will probably remember the arc where he comes up and that he's dead, since that's the only information we have... For Ibun, maybe it could be rephrased as "The previous generation Maten & Muten & Seiten Sanzos (Saiyuki Ibun)," but I don't know if that's substantially clearer to anyone who's already familiar with Ibun.