Srđan
Srđan (Serbo-Croatian Срђан/Srđan) (sometimes written as Srdan or Srdjan due to lack of the letter 'đ') is a Croatian, Bosnian and Serbian masculine given name.
The prevailing stance reckons this name originates from the Roman nomen (family name) Sergius, and this from a more ancient Etruscan name. The Latin names of two saints "Saints Sergius and Bacchus" are both translated as "Sveti Srđ i Vlaha" or "Srđevdan" or "Srđandan". The other possibility is that it derives from another Serbo-Croatian adjective: srditi, meaning angry, fiery, ardent. A medieval version of the name was Srdan. Srđa could be a form of Srđan. Most common nicknames are: Srđa, Srđo, Srki, Srle, Điđa, Đile, etc.