It's short for Isabella. Stephenie Meyer named the character Bella because it was the name that she was going to call her daughter, but because she never had a daughter, she decided to give the name to her Twilight character.
Bella's grandmothers name is Marie.
Bella- Sara Bella-marie Bella-maria Bella-louise Bella-Kate Bella-michela
Bella Spewack's birth name is Cohen, Bella.
Bella Abzug's birth name is Bella Stavitsky.
Gianni Bella's birth name is Giovanni Bella.
Bella Muni's birth name is Bella Finkel.
No, bella comes from Arizona
Bella Ventura's birth name is Ventura, Bella Clara.
Bella Vendramini's birth name is Bella Francesca Vendramini.
Bella Bruck's birth name is Bella G. Solomon.
Bella Blaze's birth name is Brittany Glysz.
Believe it or not, her vagina is named Bella. Thus the name "Bella"