RI
Reginar I Longneck
Vitals
Died
915
Family
Children
About
Reginar Long-Neck, duke in Lotharingia, founded the house that gave Louvain, Hainaut and Brabant their counts; his own claimed descent from a daughter of the Emperor Lothair stands unproven.
Research notes
✓ REGINAR I 'LONGNECK' (c.850-915), Count/Margrave in LOTHARINGIA, founder of the REGINARIDS; father of Reginar II (our line). DOCUMENTED FLOOR: the claimed Gilbert-of-the-Maasgau/Lothair descent is note-only, not hardened. Standard well-documented medieval royal/comital genealogy per the cited authorities (web-confirmed 7 Aug 2026); contested rungs note-only, not hardened.