Sigebert III

Sigebert III
Sigebert III's signet ring
King of Austrasia
Reign	633–656
Predecessor	Dagobert I
Successor	Childebert the Adopted
Mayor of the Palace	Grimoald the Elder
Born	630
Died	c. 656 (aged 25–26) Metz[1]
Burial	Nancy Cathedral
Spouse	Chimnechild
Issue	Dagobert II Bilichild Childebert (adoptive)
Dynasty	Merovingian
Father	Dagobert I
Mother	Ragnétrude
Religion	Chalcedonian Christianity (Sanctified)

Sigebert III (c. 630–656) was the Merovingian king of Austrasia from 633 to his death around 656. He was described as the first Merovingian roi fainéant —do-nothing king—, in effect the mayor of the palace ruling the kingdom throughout his reign. However he lived a pious Christian life and was later sanctified, being remembered as Saint Sigebert of Austrasia in the Roman Catholic Church and Eastern Orthodox Church.