Constantine of Preslav
Constantine of Preslav (900–1000) was a Bulgarian linguist, historian and cleric.
Overview
Born at Veliki Preslav in 900, died at Veliki Preslav in 1000.
In detail
the recorded working language is Old Church Slavonic.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Constantine of Preslav”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q1146725: Constantine of Preslav
Consult the source