"Ulyana" is a name that can be found in various cultures, including Serbian. In Serbian culture, names can often have roots in Slavic, Greek, or other traditions. If you're looking for information about the name "Ulyana" in a Serbian context, it is considered a variation of the name "Juliana," which has historic and linguistic connections to the Latin name "Julianus."
If you meant to inquire about something specific, such as a notable person