HI
Hilduin IV Count of Montdidier and Roucy
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About
Hilduin the Fourth held Montdidier and Roucy in Picardy, and he is the oldest man this article carries on our line.
Research notes
✓ HILDUIN IV, COUNT OF MONTDIDIER AND ROUCY; father of Beatrice, Countess of Perche. ⚠ POSSIBLE CONNECTION, NOT ASSERTED: this tree already holds RENAUD DE ROUCY (I100009) and his daughter ERMENTRUDE DE ROUCY (I100004) on the Carolingian and Capetian side, roughly a century earlier. The counts of Roucy are one house, so a link is likely - but Cokayne gives none here and NONE is wired. To be tested against the Roucy comital succession. END OF LINE as entered. Source: Cokayne, Complete Peerage (1st edn), 'WARWICK' pp.52-71, page images read 7 Aug 2026.