Maurice de Berkeley, 4th Baron Berkeley

Maurice de Berkeley, 4th Baron Berkeley (c. 1330 – 8 June 1368), The Valiant, feudal baron of Berkeley, of Berkeley Castle in Gloucestershire, was an English peer. His epithet, and that of each previous and subsequent head of his family, was coined by John Smyth of Nibley (died 1641), steward of the Berkeley estates, the biographer of the family and author of "Lives of the Berkeleys".

He was born in Berkeley Castle in Gloucestershire, the eldest son and heir of Thomas de Berkeley, 3rd Baron Berkeley by his wife Lady Margaret Mortimer.

In August 1338 Berkeley married Elizabeth le Despenser, daughter of Hugh Despenser the younger by his wife Eleanor de Clare. By Elizabeth he had seven children as follows:

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