Margaret de Willoughby Peerage person ID=627995 Parents Robert Willoughby, 4th Baron Willoughby Elizabeth Willoughby, Baroness Willoughby Children Siblings Sir Thomas de Willoughby William Willoughby, 5th Baron Willoughby de Eresby Elizabeth de Neville John de Neville, 5th/6th Baron Latimer (of Corby)