Roman of Bulgaria was born in 930.

Roman of Bulgaria died in 997.

xiix is the number 18 in roman and Bulgaria

:) Strange question, but no Italy has never "ruled" Bulgaria. If however you mean the Roman Empire (which can be said was centered in Rome and Italy), then yes Bulgaria was part of the Eastern Roman Empire, otherwise more commonly known as Byzantine Empire. That being said however, Eastern Roman Empire had their own emperor, a Bulgarian/Greek, named Constantin.

The area that is today southern Bulgaria and northern Turkey.