Leslie Stephen,
Dictionary of National Biography…
(1899)
“ WARBURTON, Sir PETER (1540?–1621) , judge, only son of Thomas Warburton (natural son of John, fourth son of Sir Geoffrey Warburton of Arley, Cheshire) by his wife Anne, daughter of Richard Maisterson of Nantwich, Cheshire, was born at Northwich in the same county about 1540. He passed his legal novitiate at Staple Inn, and was admitted on 2 May 1562 student at Lincoln's Inn, where he was called to the bar on 2 Feb. ”
