Childeric II (655-675)

"Childeric II (c. 653 – 675) was the king of Austrasia from 662 and of Neustria and Burgundy from 673 until his death, making him sole King of the Franks for the final two years of his life.

Childeric was the second eldest son of King Clovis II and grandson of King Dagobert I and Queen Nanthild. His mother was Saint Balthild and his elder brother was Chlothar III, who was briefly sole king from 661, but gave Austrasia to Childeric the next year. He was still a mere child when he was raised on the shields of his warriors and proclaimed king in Austrasia." - (en.wikipedia.org 04.10.2020)