Returning at Dagobert's death (639), he governed Austrasia in Sigebert's name, but died in the following year.
The Ripuarians long remained allies of Clovis, Sigebert's son Chloderic fighting under the king of the Salian Franks at Vouille in 507.
Clovis, however, persuaded Chloderic to assassinate his father, and then posed as Sigebert's avenger, with the result that Chloderic was himself assassinated and the Ripuarians raised Clovis on the shield and chose him as king.
Sigebert's most important work is a Chronographia, or universal chronicle, according to Molinier the best.
On the death of Chilperic, Tours remained for two years (584-585) in the hands of Guntram, but when Guntram adopted his nephew Childebert, Sigebert's son, it again became Austrasian.