Robert de Fiennes

Robert de Fiennes, named Moreau (1308–1385) was the 28th Constable of France.

His father was Jean de Fiennes, Lord of Tingry and Chatelain of Bourbourg.

In 1356, he succeeded Walter VI, Count of Brienne as Constable of France.

After the Treaty of Brétigny, his castle at Fiennes, Pas-de-Calais came into the English sphere of influence.

In 1370, he resigned as Constable because of his age, and he was succeeded by Bertrand du Guesclin.