Petronilla (Pernel) de Grandmesnil Countess of Leicester

✓ Pernel (Petronilla), 'heiress of the Norman honour of Grandmesnil, great-granddaughter of Hugh de Grandmesnil, the Domesday tenant, but her parentage has not been discovered'; m. before 1155-1159 Robert es Blanchemains, 3rd Earl of Leicester (I99849) - she witnessed a charter of his father to Fontevrault c.1155-59 as 'Petronilla uxore Roberti filii mei' (Round, Cal. Docs. no.1062): CP VII 'Leicester' p.532 and notes. Robert de Torigni (an. 1168) says the 3rd Earl 'accepit cum uxore sua hereditatem de Grentemesnill'; CP rejects the Leicester Abbey story that she was Hugh de Grandmesnil's own daughter. She shared her husband's rebellion of 1173 and was captured with him after Fornham (Jordan Fantosme - note-only). Mother of Margaret de Beaumont (I99842), Countess of Winchester. TOP - parentage undiscovered. Source: Complete Peerage 2nd ed. vol. VII (1929), 'Leicester' p.532 and notes (archive.org completepeerageo07coka_0), read 27 Oct 2026. [DIRECT ANCESTOR OF THE COMPILER: flag added 27 Oct 2026 by walking the tree from Aynsley, so that this marker is reliable and can be searched.]