He is dark and square faced.
Jarid was one of the nobles who didn't support Morgase Trakand when she assumed the throne after the Succession, and was forced to swear fealty to her afterwards.
When Elayne returned to Andor, he was part of Arymilla Marne's forces that have laid siege of Caemlyn. He was kept separate from Elenia so he would be unable to find a way to escape Arymilla with his wife.
Arymilla mobilized her entire force and attacked the Far Madding Gate. Her army was outflanked and surrendered. Jarid still had a sizable force behind him and was still at large.
His camp was apparently struck by a bubble of evil which reduced all the metal there to sludge. Their weapons useless, his troops deserted, leaving him tied to a tree while ghosts appeared around them.