Margaret Peverel Countess of Derby

✓ Margaret, 'da. and h. of William Peveril of Nottingham' [the younger] (CP IV 'Derby' p.192 and errata: read Peverel), wife of Robert de Ferrieres, 2nd Earl of Derby (founder of Merevale and Darley, d. before 1160, bur. at Merevale wrapped in an ox-hide); 'eventually, or in her issue, his heir' (CP IV App. I p.763) - the Earls of Derby's claim to the honour of Peverel came through her. Which of her father's two wives (Oddona; Avice de Lancaster) was her mother is not stated - MOTHER NOT WIRED. Mother of William, 3rd Earl (I100495). 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.]