Morgan D'Estaing was born in 1783 in Gambais, France. A foundling taken in by the wealthy D'Estaing family, Morgan was raised by adoptive parents who thought they would never have children of their own. It was only much later their son was born, and later, a daughter were born. Morgan seemed to have a great life but things changed in the years to come.

Morgan was devoted to Xavier and sought vengeance against MacLeod after he beheaded his teacher. In 1996, Paris, he was was a jewel thief. He ran into Duncan MacLeod, and tried to kill him. At first close to MacLeod's barge, where he lured the Highlander into a hall, using poison gas to weaken him. Duncan managed to escape before Morgan could take his head.