William (III) de Beauchamp
William de Beauchamp (c.1215–1268) was an English baron and hereditary sheriff.
He was born and lived in Elmley Castle, Worcestershire the eldest son of Walter de Beauchamp (judge) and his wife Joan de Mortimer, daughter of Roger Mortimer of Wigmore.
On the death of his father in 1236 he became hereditary Sheriff of Worcestershire which title he held until his own death.
He died in 1268. He had married Isabel, daughter of William Mauduit and sister of William Maudit, 8th Earl of Warwick. They had 8 children, of which his heir was William, who inherited the title of Earl of Warwick from his uncle.
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