More info about the name "Arabella"
Arabella is most likely a Medieval Scottish variant of Annabel. Annabel is a variant of Amabel, possibly influenced by Anna. Amabel originates in Latin language and means "adorable". It is ultimately derived from the masculine name Amabilis, a French Saint of Riom. Lately, Amabel has not been very popular as a feminine given name and sounds rather old-fashioned. The variant Annabel is much more popular.