Rhona Dinsmore, minor character in the video game Assassins Creed IV: Black Flag
Rhona Goskirk, character from the British soap "Emmerdale"
"A name of uncertain origin which began to be used in Britain in the 1870s. The name Rona appeared at the same time and it is therefore reasonable to connect the two, especially since both were much used in Scotland. This would make the origin of the name a Scottish place-name, itself derived from Old Norse hraun-ey 'rough isle.' " (Source: The Facts on File Dictionary of First Names, 1983)