Andre I de Vitre Seigneur de Vitre

✓ as a name: Andre, Seigneur de Vitre in Brittany, father of Hawise, Countess of Derby, by Agnes da. of Robert Count of Mortain (CP IV 'Derby' p.191). TOP for now - the Vitre descent and his connection to Robert III de Vitre (I100843) await Medieval Lands 'Brittany nobility'. Source: Complete Peerage 2nd ed. vol. IV (1916), 'Derby' pp.191-194 and Appendix I 'Peverel of Nottingham' pp.761-767 (archive.org completepeerageo04coka), 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.]