The second child of the Marquis and Marchioness of St. Aubyn’s, who own St. Aubyn’s abbey in London. He is the brother of Juliet, Barbara, Clive, and Temple d’Orsey. Like Clive, Michael fights in World War I and returns to St. Aubyn’s to rest. He finds Clive’s pacifist friends detestable, believing that they ruin the morale of the war effort.