We can definitely confirm that from the 13th century onwards there were '''two ethnic''' communities living on the island in the middle ages, <ref>[http://books.google.com.au/books?id=p3oGybOY1w4C&pg=PA103&dq=korcula+Venice++Slavs&hl=en&ei=oMBjTJPQBoicvgPkpPCeCg&sa=X&oi=book_result&ct=result&resnum=6&ved=0CE4Q6AEwBQ#v=onepage&q=korcula%20Venice%20%20Slavs&f=false When Ethnicity Did not Matter in the Balkans:] by John Van Antwerp Fine. (p103)</ref><ref>Smiciklas, ''CD'' V, (p237); N. Klaic, ''Povijest Hrvata u Razvijenom'', (p130) {{quote| | We can definitely confirm that from the 13th century onwards there were '''two ethnic''' communities living on the island in the middle ages, <ref>[http://books.google.com.au/books?id=p3oGybOY1w4C&pg=PA103&dq=korcula+Venice++Slavs&hl=en&ei=oMBjTJPQBoicvgPkpPCeCg&sa=X&oi=book_result&ct=result&resnum=6&ved=0CE4Q6AEwBQ#v=onepage&q=korcula%20Venice%20%20Slavs&f=false When Ethnicity Did not Matter in the Balkans:] by John Van Antwerp Fine. (p103)</ref><ref>Smiciklas, ''CD'' V, (p237); N. Klaic, ''Povijest Hrvata u Razvijenom'', (p130) {{quote| |