Bella - beautiful. Bellum - War. Entirely different Latin roots.
Neutral words of the second declination have -a in their plural. Therefore bella means wars.
And knowing Rick's love for the latter, we all know what etymology he'd prefer.
Santorum's wife is called Bella ?
My latin is a bit rusty, but doesn't "bella santorum" mean "wars of saints" ? 
Daughter, and I'm pretty sure "Bella" as a name is "beautiful," not "wars."
Edit: (Not that I'd be surprised if Ricky actually wanted to name his daughter "wars").
bellum, i, n means "war". "bella" as the feminine of "beautiful" is italian and doesn't have latin roots AFAIK.
Bellus, -a, -um - pretty, handsome, charming, pleasant, agreeable, polite; nice, fine, excellent;
(The vast majority of Italian words have Latin roots, especially the Latinate ones...)
Still, as a Latin word it was relatively rare. 'Pulcher' was much more common.
Edit: Or 'is' much more common, as I'm obviously only talking about written texts.
