Luana

"Buzau mountains (Romania) are metaphorically named Land of Luana, due to a legend passed over from generation to generation via the peasants in the region.
Seniors say that once upon a time, in Buzau mountains there was an old and wise king, Luana, whose fortresses touched the sky. The defenders of the fortresses were brave and fought for justice, the king was healing their wounds with charmed waters from the Spring Wells’ Valley."

Some possible meanings are "daughter of the light" or "born in Luanda". It can be also the union of "Luísa" and "Ana", or "Lúcia" and "Ana".

Luana is a Hawai'ian name meaning 'to be at leisure' and an old Germanic name meaning 'gracious warrior'. It is the name of a heroine in Romanian mythology (in other legends, it's the name of a princess).

Maria is right. The name is NOT invented.

It is also a form of an Albanian name, derived from Luanesha, which means lioness.