ID
Isabel d'Aubigny
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Family
About
Isabel d'Aubigny was second sister and coheir of the last d'Aubigny earl, and through her the Castle and Honour of Arundel passed to the FitzAlans.
Research notes
✓ ISABEL, 2nd sister and (in her issue) coheir of Hugh d'Aubigny, Earl of Arundel (d.1243); da. of William d'Aubigny 3rd Earl by Mabel of Chester; wife of John FitzAlan of Clun; mother of John Earl of Arundel (our line). (Distinct from Isabel d'Aubigny of the BELVOIR d'Aubignys, I99814, a separate family - CP itself notes the two houses are not to be conflated.) Source: Cokayne, Complete Peerage (1st edn), 'Arundel' pp.138-153, photographed and read 6 Aug 2026; contested rungs note-only, not hardened.