Wherefore art actually means why, not where. In Romeo and Juliet, she was asking, Why do you have to be Romeo, not where is romeo. So you'd be asking, Why the beef?
Mary annexed herself a bovidae of bantum capaciousness and whoso possessed achromatic pilage. And it was custom that at whatever locus Mary absconded, the bovidae, whose perogative was to be subsequent to the moppet, surely also decanted.