Ami, Ama, Mabel, Bel, Bella.
Famous people named Amabel:
Lawyer Amabel Anderson Arnold; chess champion Amabel Moseley; nom de plume of novelist Susan Fenimore Cooper, Amabel Penfeather.
The short story "The Aunt and Amabel" by E. Nesbit is said to be the inspiration behind C.S. Lewis' The Chronicles of Narnia.