Tiranoc is an outer Kingdom of Ulthuan. It is a sunken realm still recovering from the Sundering and is home to great charioteers. The capital was Tor Anroc, but it sunk beneth the waves. It's not stated which city is the current capital. The Asur of Tor Anroc (named after the sunken capital) in the Old World originate from this realm. (Gilead te tuin Lothain ut tor Anroc for an example)