Sporoi (Greek: Σπόροι) or Spori was according to Eastern Roman scholar Procopius (500–560) the old name of the Antes and Sclaveni, two Early Slavic branches.
Procopius stated that the Sclaveni and Antes spoke the same language, but he did not trace their common origin back to the Veneti (as per Jordanes) but to a people he called "Sporoi".
[2] Ukrainian historian Mykhailo Hrushevskyi (1866–1934) noted the scholarly view on the matter: Procopius' etymology was rejected as mistaken, and many scholars linked the term with the Serbs; some sought a connection to Ptolemy's Serboi, but "these Serboi lived far to the east, in the Volga region".
[4] According to British archaeologist Paul M. Barford, writing in 2001, it most likely derived from the Proto-Slavic word for "multitude" (sporъ, whence Polish sporo, etc.).
[5] It states that the Zeriuani "which is so great a realm that from it, as their tradition relates, all the tribes of the Slavs are sprung and trace their origin" (Zeriuani tantum est regnum, ut ex eo cunctae gentes Sclavorum exortae sint, et originem, sicut affirmant, ducant).