Dagobert I (c. 603 – 19 January 639) was the king of Austrasia (623–634), king of all the Franks (629–634), and king of Neustria and Burgundy (629–639). He was the last king of the Merovingian dynasty to wield any real royal power. Dagobert was the first of the Frankish kings to be buried in the royal tombs at Saint Denis Basilica.