Rosita
Rosannah
Roslyn
Then I googled and found
Rosette, Rosena, Rosa, Rosaleen,Rosalia,, Rosalin, Rosalina, Rosalind, Rosaline, Rosalinn, Rosalynn, Rosanie, Roselia, Roselina, Roseline, Rosella, Roselle, Rosena, Rosenah, Rosene, Rosetta, Rosette, Rosey, Rosheen, Rosie, Rosina, Rosine, Rosio, Rosita, Roslyn, Rosy, Roza, Rozalie, Rozaline, Rozalyne, Roze, Rozele, Rozella, Rozene, Rozina, Rozsa, Rozsi, Rozsika, Rozy, Ruza, Ruzena, Ruzenka, Ruzha, Ruzsa and Zita.

ETA: Wow that winky emoticon is just all levels of wrong isn't it?
Yes all types of wrong!!

And gee your WAY TOO MUCH HELP


But then again will have to think more on Rosannah....Reminds me a little too much of Rosanne that america show from the 90's but ill run it past DH thank you!