Does it have a history of use? I can't find it on any of the SSA popularity lists. I believe you, but when was it used?
Anyway, I don't really understand the logic of "It's been used as a name before". If a bunch of people started naming their daughters Table, would that make it a name?
Hosanna is along the lines of
Selah in my opinion. It's not actually a given name, but it sounds and looks enough like a name that people use it as such.