Background
William was the second son of Henry Norris, 1st Baron Norreys and his wife, Margery Williams, the younger daughter of John Williams, 1st Baron Williams of Thame.
William was the second son of Henry Norris, 1st Baron Norreys and his wife, Margery Williams, the younger daughter of John Williams, 1st Baron Williams of Thame.
He was the father of Francis Norris, 1st Earl of Berkshire.
From 1572 to 1579, during the reign of Elizabeth I of England, he was the Member of Parliament for Berkshire.