Names ending in ella

The name of the princess heroine in Philippa Gregory's series of children's books, who subverts the usual tropes by being fierce, headstrong, principled and adventurous.

Somewhat awkward feminization of Peter. Try Petra, Petronia, or Petronilla, an early saint's name.

Penella splits the difference between Penelope and Fenella (which in Ireland were historically used as equivalents to each other).