Dervan (Serbian Cyrillic: Дерван) (* c. 600, † after 632) was an early prince of the "Serbs" (i.e. Sorbs or White Serbs). Serbian Cyrillic is the Serbian variant of the Cyrillic alphabet. ... For other uses, see number 600. ... Events Abu Bakr becomes first caliph or Successor of the Prophet, leader of Islam Abu Bakr defeats Mosailima in the Battle of Akraba. ... The Sorbs are a Slavic minority indigenous to the region known as Lusatia in the German states of Saxony and Brandenburg (in former GDR territory). ... White Serbs were a Slavic tribe, which lived in the region around river Elbe (today in eastern Germany and western Poland) in the early medieval ages. ...

He is mentioned by Fredegar as the prince of the West Slavic tribe of Sorbs (White Serbs). He is the first ruler of northwest Slavs mentioned by name. The Chronicle of Fredegar (died ca 660) is the main source for Western European events of the 7th century, a formative period whose scarcity of sources in part justifies the characterization of its silence as that of the Dark Ages. In the 7th century many institutions of the Middle Ages...

Fredegar says that he has been subordinate to the Franks for a long time. After the defeat of King Dagobert I by Samo near Wogastisburg, Dervan and his Serbs joined Samo in 631/632, with whom he led his people into several wars against the Franks. Further reports of Fredegar imply that Dervan and his people lived to the east of the Saxon Saale. The reference to Dervan in 631/32 is also the first written confirmation of the presence of Slavs to the north of the Ore Mountains (Erzgebirge / Krušné hory). For other uses, see Franks (disambiguation). ... Dagobert I (c. ... King Samo (? – 658) was a merchant born in the Senonian country (Senonago) (probably todays Sens in France). ... Combatants Slavs Austrasians Commanders King Samo Dagobert I According to the contemporary Chronicle of Fredegar, the battle of Wogastisburg was a battle between Slavs under Samo and Franks under King Dagobert I in 631. ... For other uses, see Franks (disambiguation). ... Length 413 km Elevation of the source 728  m Average discharge  ?  m³/s Area watershed  ?  km² Origin  Germany Mouth  Elbe Basin countries Germany Saale is the name of two rivers in Germany: the Saxonian Saale (German: Sächsische Saale) and the Franconian Saale (German: Fränkische Saale). ... In the 19th century the Erzgebirge mountains were a centre for lace making. ...