William Brereton, 2nd Baron Brereton (28 February 1611 – April 1664) was an English landowner from Cheshire and member of the Peerage of Ireland who owned estates in County Carlow.
William Brereton, 2nd Baron Brereton (February 28, 1611 – April 1664), was a prominent English nobleman from Cheshire who held significant landholdings in Ireland and specifically in County Carlow.