The name Beaumont refers to the beautiful mountains of the Normandy region of France. The earliest record of the name is Mathaeus de Bello Monte, 1086. The ancestors of the Anglo-American families of Be'man, Beaman and Beaumont were of the Norman family of de Beaumont or de Bellemont who descended from Rollo, Duke of Normandy and also from Charlemagne. The Beaumonts were settled in both Normandy and Maine in France and accompanied William the Conqueror when he went to England. They inter-married with a number of the powerful royal and noble houses of England, France, Spain and Scotland.
The history of the Beaumonts begins with Bernard surnamed the Dane, born about the middle of the ninth and died in the second Quarter of the following century. He was a descendant of one of the Kings of Denmark and a near kinsman, possibly a brother or son of Rollo, or possibly he may have been an outlaw from the West coast or Norway. He was second in command of the expedition into-France, and when Rollo divided up the new Duchy amongst his chieftains, Bernard received as hi6 share the Lordship of Harcourt, together with a large tract of country lying between the rivers Sarthe and Rille in the province of Maine, now known as the Departments of Mayenne, Orne and Sarthe. 
- Roger de Beaumont-le-Roger (c. 1015 – 29 November 1094) was son of Humphrey de Vielles (himself a great-nephew of the Duchess Gunnora of Normandy) and his wife Albreda de la Haye Auberie. Roger de Beaumont, Lord of Beaumont-le-Roger and Pont-Audemer, Viscount of Hiesmes, was thus a second cousin once removed of William the Conqueror.
- Robert de Beaumont, 1st Earl of Leicester and Count of Meulan (1050 – June 5, 1118) was a powerful English and French nobleman, revered as one of the wisest men of his age. Chroniclers speak highly of his eloquence, his learning, and three kings of England valued his counsel.
- John Beaumont 4th Baron Beaumont (1361–1396) served in the French wars against the partisans of Pope Clement VII. He was Knighted by Edward III, and was Warden of the West Marches, Admiral of the North (sea), Constable of Dover Castle, and Lord Warden of the Cinque Ports. He was a Knight of the Garter and was 'one of the Embassy to France to demand Princess Isabel in marriage for the King'.
- Sir George Howland Beaumont 7th baronet (6 November 1753–7 February 1827), was a British art patron and amateur painter. He played a crucial part in the creation of London's National Gallery by making the first bequest of paintings to that institution.
- Dr. William Beaumont (November 21, 1785 - April 25, 1853) was a surgeon in the U.S. Army who became known as the "Father of Gastric Physiology" following his research on human digestion.
- Major Kenneth Beaumont (10 February 1884 – 24 June 1965) is the individual probably most responsible for the development of international aviation law.
- Hugh "Binkie" Beaumont (1908-1973) was a British theatre manager. He was one of the most successful manager-producers in the West End during the middle of the 20th century; indeed, the director Tyrone Guthrie commented that, in his prime, Beaumont had the power to make or break just about any theatrical career in London.
- Eugene Hugh Beaumont (February 16, 1909 - May 14, 1982) was an American actor, television director, and Methodist minister. He is best known for his portrayal of the character Ward Cleaver on the popular TV series Leave It to Beaver from 1957 to 1963.