Born in Glogow[?] (Glogau), Silesia, he married Hedwig of Andechs (Polish name Jadwiga). Their son, duke Henry II the Pious[?], was killed in battle against the Mongols at Liegnitz near Wahlstatt[?] three years after succeeding his father.
Henry I was the successor to duke Boleslaw the Long[?], who had received the ducal position following the intervention in a succession dispute in the province by the Emperor Frederick I of the Holy Roman Empire in 1163.
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