Pierre Mauclerc Duke of Brittany

✓ as named: Pierre, called Mauclerc, Duke or Count of Brittany, father of Yolande, Countess of La Marche (CP IV p.201). His own descent (Pierre de Dreux, son of Robert II Count of Dreux, a great-grandson of Louis VI) is standard but not read today - not wired. TOP - nothing further wired. Also CP IV (1916) 'Derby' p.201, where Hugues XI's daughter Mary is 'the King's niece ... da. of Hugues XI, called le Brun, Count of La Marche and Angouleme, Sire de Lusignan in Poitou, by Yolande, da. of Pierre, called Mauclerc, Duke or Count of Brittany'. [DIRECT ANCESTOR OF THE COMPILER: flag added 2 Nov 2026 by walking the tree from Aynsley, so that this marker is reliable and can be searched.] ||2 Nov 2026 - PARENTS AND WIFE WIRED (Medieval Lands)|| Pierre de Dreux 'Mauclerc' ([1187]-at sea off Damietta May 1250), son of Robert II, Comte de Dreux, by Yolande de Coucy; Duke of Brittany 1213, Earl of Richmond 1219; m. (1) [1213/14] Alix de Thouars, Duchess of Brittany, mother of Yolande; m. (2) Nicole, (3) Marguerite de Montaigu, (4) Jeanne de Lusignan. RINGs: Dreux to Louis VI; Alix to Stephen of Brittany and Margaret of Huntingdon. TOP removed. Source: Medieval Lands (fmg.ac, Cawley), read 2 Nov 2026: 'Dreux & Mantes' (pardreman). Also 'Brittany Dukes'.