Demarest History, Family Crest & Coats of Arms
The Demarest surname is a habitational name derived from any of several places named with the Old French words "mareis" or "maresc", meaning "marsh".
Early Origins of the Demarest family
The surname Demarest was first found in Cambray, Normandy (French: Normandie), the former Duchy of Normandy, where ancestors of the family belonged to the house of Bousis. According to Arthurian legend, Sir Hector de Maris (or Ector de Maris), was a Knight of the Round Table, younger half-brother of Lancelot and the natural son of King Ban of Benwick and the Lady de Maris.
René Desmarais, son of Jean and Jeanne (née Brassard), travelled from Poitou, France to the New World in the 17th century. He married Jeanne Blondeau at Trois-Rivières, Quebec on 16th November 1671. 
Early History of the Demarest family
This web page shows only a small excerpt of our Demarest research. Another 297 words (21 lines of text) covering the years 1096, 1113, 1108, 1429, 1360, 1682, 1519, 1567, 1518, 1604, 1696, 1500, 1696, 1108, 1595, 1676, 1648, 1721, 1604, 1686, 1648, 1721, 1662, 1714, 1647, 1709, 1656 and 1728 are included under the topic Early Demarest History in all our PDF Extended History products and printed products wherever possible.
Demarest Spelling Variations
Spelling variations of this family name include: Desmarais, Demarais, Des Marais, Desmarets, Desmarés, Desmareys, Desmaray, Desmaraie, Desmarest, Desmaret, Desmarets, Démarais, Démarets, Démarey, Démareys, Démarés, Démarey, Démaré, Démarés, Démarée, Démarées, Démaraie, Démaray, Maret, Marest, Marais, Mareys, Marets, Marest, Mares, Marays, Marrey, Mareys, Marées, Des Marest, Des Maret, Des Marets, Des Marez, De Marest, Du Marest, Du Marais, Du Marrey, Du Mareys, Du Mares, Du Marays, Du Mareys, Du Marées and many more.
Early Notables of the Demarest family (pre 1700)
Notable amongst the family in this period was Baldwin I, Lord of Marets in the 11th century, as well as Hugues Maret, the first Priest at the Benedictine Abbey of Valbenoite, in 1108. Jean Desmarets (1595-1676), Sieur de (Lord of) Saint-Sorlin was the author of many volumes of poetry and critical works, as well as the first chancellor and co-founder of the Académie Française; Nicolas Desmarets, known as the Marquis de Maillebois (1648-1721)...
In the United States, the name Demarest is the 16,570th most popular surname with an estimated 2,487 people with that name.  However, in France, the name Demarest is ranked the 6,242nd most popular surname with an estimated 1,000 - 1,500 people with that name.