Sir William de Fiennes 2nd Baron de Fiennes

  Noted events in his life were:

• Background Information. ⁹⁰⁰
William de Finnes, the eldest son of Ingelram de Fynes (Enguerrand de Fiennes), married Blanch de Brienne, Lady of Loupland, &c. in Maine, and was summoned 5 Edward I among other noblemen to attend the King in his epedition into Wales. He died 38 Edward I, and had by his wife, first, John de Fiennes; second, Robert de Fiennes, Lord of Roubec in France; and third, Mary, wife of Edmund Mortimer, Lord of Wigmore.

~Collin's Peerage, Vol. VI, p. 563

• Background Information. ¹⁶⁰
Jean de Brienne, son of Berengaria of Leon and Jean de Brienne, King of Jerusalem, died in 1296. He was the Grand Butler of France in 1258. He married twice, first to Mary Widow of Alexander II, King of Scotland, and daughter of Enguerrand de Coucy, who died without heir. His second wife, whom he married in 1251, was Jeanne, daughter of Geoffrey V, vicomte of Chateaudun by his wife Clemence, daughter of William des Roches, who died 1222 & was the Seneschal of Anjou, Maine & Touraines by his wife Marguerite of Sable. Their daughter, Blanche de Brienne, Lady of Loupeland, married William de Finnes. Sir William de Fiennes died in 1302 and was the son of Ingelram (or Enguerrand) de Fiennes, Seigneur de Fienes and a daughter of Jacques, Seigneur of Conde, Baileul and Moriammez in Hainaut.

~Weis's Ancestral Roots of Certain American Colonists Who Came to America before 1700, 8th Edition, 120:29-31, 152:28-29

William married Blanche de Brienne, daughter of Jean de Brienne and Jeanne de Château-du-Loire.⁹⁰⁰ (Blanche de Brienne was born in 1245-1252 in France and died in 1302.)