Thierry I de Mousson Count of Bar

✓ Thierry I de Mousson, Count of Bar, Mousson and Montbeliard (d. c.1105), husband of Ermentrude of Burgundy ('Theoderici atque suae uxoris Hermentrudis', 1105). His parents not wired. Source: Medieval Lands (fmg.ac, Cawley), 'Burgundy Kingdom - Montbeliard'. [DIRECT ANCESTOR OF THE COMPILER: flag added 20 Oct 2026 by walking the tree from Aynsley, so that this marker is reliable and can be searched.]