II
Ivo I Count of Beaumont-sur-Oise
Vitals
Family
Children
About
Ivo I, Count of Beaumont-sur-Oise, held the river-crossing county north of Paris; his line's daughters married into the Norman baronage, and into our descent.
Research notes
✓ ES: IVO I, Count of Beaumont-sur-Oise; father of Ivo II (our line). FRONTIER-ish above. Added 14 Sep 2026.