Ariel or Ariella (Little Mermaid)
Cinderella or Cindy (Cinderella)
Aurora or Aurelia (Sleeping Beauty)
Belle or Bella (Beauty and the Beast)
Melody or Melanie (Little Mermaid 2)
Tiana or Tatiana (Princess and the Frog)
Jasmine or Yasmine (Aladdin)
Mulan or Muela (Mulan)
Merida or Melissa (Brave)
Anna or Annisa (Frozen)
Elsa or Eliza (Frozen)
Esmeralda or Esme (Hunchback of Notre Dame)
Maariyah or Aaliyah (Unknown)
Each combo has the official name of the Princess and a common-day or similar name.
Try to keep going until you get to one name.