From Akashic Records
He was held in prison by Amadis but his wife, in disguise, extracted a promise of help from Amadis. When she claimed the release of her husband, Amadis was bound to keep his promise.
To obtain revenge, Archalaus captured Lisuarte, father of Oriana the wife of Amadis, and imprisoned him in the castle on Forbidden Mountain. Esplandian, Lisuarte's grandson, helped by Urganda, killed Archalaus, together with his sister Arcabone and her three sons, and rescued his grandfather.