Gypsy Breynton by Elizabeth Stuart Phelps Ward

As will be readily supposed, Gypsy's name was not her original one; though it might have been, for there have been actual Billys and Sallys, who began and ended Billys and Sallys only.

Gypsy's real name was an uncouth one -- Jemima. It was partly for this reason, partly for its singular appropriateness, that her nickname had entirely transplanted the lawful and ugly one.