This is an exotic and lovely form of Susannah commonly heard in Israel. Shoshana Shaunbaum--nicknamed Shosh-- is the character played by Zosia Mamet on the hit HBO series Girls—a fact that could give the name an upward thrust.
And there are other recent references. She's a noble figure in Quentin Tarantino's 2009 film Inglorious Basterds, and Shoshannah Stern was a character on the TV show Weeds.
Shoshanna Lonstein is a designer, founder of the label Shoshanna.