Gillian

Dromio of Ephesus. Maud, Bridget, Marian, Cicely, Gillian, Ginn! Dromio of Syracuse. Mome, malt-horse, capon, coxcomb, idiot, patch! - - - Dost thou conjure for wenches, that thou call'st for such a store

Source: wiktionary

"Just Jill, I'm afraid." "Would you prefer if it was Gillian?" "Oh, I think so. Gillian sounds so much fancier." "Fancy?" Terrence said. He smiled at her. "Or perhaps it sounds flashy?" "Royal," Richard said. "Flowery," Terrence added. "You could say Gillian was more flowery. That would fit. What about you, Corrie, what does it sound like to you?" "Rich," Corrie glanced at Jill. "Gillian sounds richer than Jill."

Source: wiktionary

Do you snarl, you black Gill?

Source: wiktionary