The first thing that came to my mind, oddly, was
Siobhan despite the pronunciation.
I'm a big fan of Sibella /
Sibilla /
Sibylla / etc.
SebastianaSebastienneSabineSabrinaSabriyya (I love this name. omg.)
SabienSibeal /
Isibeal
ETA: I forgot about Zibby.
Zenobia came to mind first. whoa.
ZibaZibiahHephzibah /
HepzibahZubaida IzabelaJezebelThis message was edited 12/3/2015, 11:02 PM