In south slavic languages, croatian and serbian to be exact, "gora" has a meaning of a forrest on a hill or a mountain, so it is commonly used to describe a hill covered with forrest.
Anyway, it became a popular name in these countries after world war II, because a famous poet
Ivan Goran Kovaèiæ took his second name
Goran, as a tribute to his homeland Gorski Kotar(region on mountains). He was killed by nazi soldiers in Bosnia.ž
The secon meaning of "goran" is as a inhabitant of Gorski Kotar, a region in Croatia.
Regards,
Goran