Which lady gave birth to XXX?
Peregrine Bertie, 13th Baron Willoughby de Eresby
Peregrine Bertie, 13th Baron Willoughby de Eresby (12 October 1555 -- 25 June 1601) was the son of Catherine Willoughby, 12th Baroness Willoughby de Eresby, and Richard Bertie.