Robert de Beaumont, 1st Earl of Leicester (Sometime between 1040 & 1050 – 5 June 1118), also known as Robert of Meulan, count of Meulan, was a powerful Norman nobleman, one of the Companions of William the Conqueror during the Norman Conquest of England, and was revered as one of the wisest men of his age. Chroniclers spoke highly of his eloquence, his learning, and three kings of England valued his counsel.
He was born between 1040-1050, the eldest son of Roger de Beaumont (1015-1094) by his wife Adeline of Meulan (died 1081), a daughter of Waleran III, Count de Meulan, and was an older brother of Henry de Beaumont, 1st Earl of Warwick (c. 1050-1119)
Robert de Beaumont was one of only about 15 of the Proven Companions of William the Conqueror at the Battle of Hastings in 1066, and was leader of the infantry on the right wing of the Norman army, as evidenced in the following near contemporary account by William of Poitiers:
"A certain Norman, Robert, son of Roger of Beaumont, being nephew and heir to Henry, Count of Meulan, through Henry's sister Adeline, found himself that day in battle for the first time. He was as yet but a young man and he performed feats of valour worthy of perpetual remembrance. At the head of a troop which he commanded on the right wing he attacked with the utmost bravery and success".
His service earned him the grant of more than 91 English manors confiscated from the defeated English, as listed in the Domesday Book of 1086.
When his mother died in 1081, Robert inherited the title of Count of Meulan in Normandy, and the title, Viscount Ivry and Lord of Norton. He paid homage to King Philip I of France for these estates and sat as a French Peer in the Parliament held at Poissy.