Arabella is definitely not popular. I have never known or known of one, and can't think of any famous ones.
It's as foo-foo and fussy and overstuffed as Isabella or Annabelle. Also for some reason makes me think of a skin rash.
"It's one thing to be open-minded and quite another to be so open-minded your brains fall out."--Dear Abby
"Let other people push you around, and you deserve whatever bad things happen after that."--Lauren Bacall