According to the contemporary
Chronicle of Fredegar, the
Battle of Wogastisburg was a battle between
Slavs (
Sclav, cognomento Winidi) under King
Samo and
Franks under King
Dagobert I in 631. The Frankish armies advanced into the area of the Slavic tribal union in three streams -
Alamanni,
Lombards, and
Austrasian Franks. The first two were quite successful, but the main fighting force was defeated in a three-day battle near a place referred as
Wogastisburg.