Roza - From Latin name Rosa (Russian Roza) which means "rose". It corresponds to Arm names Vard, Varduhi, Vardik. It came through Russian and is a spread name.
Avakyan - is a name of Armenian origin. It derives from the Armenian word avag, meaning "oldest", perhaps signifying that a male ancestor was a prominent individual in his community. It may also mean "son of Avak".