St Jerome was living in a Bosnian city Stridon then part of Greater Dalmatia today known as Bosansko Grahovo, ancestor of later Bosnian Vlachs.

Bosnian Vlachs later after arrival of Polish and Ukrainian people mixed with them that brought to creation Serbian and later Bosniak nation.

1850 A.D Bosnia had up to 50-100.000 Romance speakers while Serbia 200.000 and that was leftover, they are also assimilated.

Jerome revised all the Gospels of the Vetus Latina from the Greek, it is unknown who revised the rest of the New Testament.

Jerome himself translated all books of the Jewish Bible from the Hebrew (having separately translated the book of Psalms from the Greek Hexapla Septuagint); and further translated the books of Tobias and Judith from Aramaic, the additions to the book of Esther from the Common Septuagint and the additions to the book of Daniel from the Greek of Theodotion.

People think that Bosnian region was always illiterate, backward but it's not true... Jerome is a typical sample.