Mathieu I Duke of Lorraine

✓ Mathieu I, Duke of Lorraine ([1119]-13 May 1176, bur. Clairlieu), son of Duke Simon I (Alberic: 'dux Matheus et Robertus' sons of 'ducis Symonis'); m. (before 25 Mar 1139) Bertha (Judith) of Staufen, sister of the Emperor Frederick Barbarossa; father of Judith, Countess of Auxonne. Source: Medieval Lands (fmg.ac, Cawley), read 2 Nov 2026: 'Lorraine (Dukes)'. [DIRECT ANCESTOR OF THE COMPILER: flag added 2 Nov 2026 by walking the tree from Aynsley, so that this marker is reliable and can be searched.]