Ruhl Buckhannah is a minor character in The Sword of Shannara. He was the king of Callahorn until his son Palance Buckhannah, guided by Stenmin the mystic, took over. He is also the father of Balinor Buckhannah, Palance's older brother.
Very little is known about Ruhl except that he worked with the Border Legion.
Ruhl Buckhannah died in the tower of the Buckhannah mansion after a slow and steady poisoning by Stenmin. He had been dead for three days before the discovery of his body.