Sir Clarence DeFoe is the last remaining heir of the DeFoe line who is killed after moving into DeFoe Manor with his new bride Julia Swanson-DeFoe. The DeFoe family was thought to have lost all heirs before Sir Clarence until he came forth with proof of his ties to the DeFoe family. This proof is never expounded upon in the Chzo Mythos. Sir Clarence renovates DeFoe Manor, which had been unoccupied since (date).
Sir Clarence meets his demise by hanging, his body discovered in a tree out front of the manor. It is assumed by the police that Sir Clarence killed himself after stabbing and killing Julia. It is however heavily implied that this is just another deed of the sprit of John DeFoe.