Vratislav I Duke of Bohemia

✓ Vratislav I, Duke of the Bohemians 915-921 (888-killed in battle 13 Feb 921), younger son of Borivoj (Chronica Boemorum: 'Spitigneum et Wratizlaum' sons of 'Borivoy'; Vita Vencezslavi); succeeded his brother Spytihnev; m. [906] Drahomira; father of St Wenceslas and Boleslav I. Source: Medieval Lands (fmg.ac, Cawley), read 5 Nov 2026: 'Bohemia' (Premyslid 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.]