The name comes from the Ionian word "zagre," meaning a pit for the capture of live prey. The original Zagreus was eaten by Titans and his heart, gestating in a mortal woman, became the god of wine and madness. It is safe to assume that mothers do not generally call their children "Zagreus." That’s something you do to yourself, if you want to advertise your terrible socialisation to your peers. Although it hardly needs saying once you see what Zagreus is and how it lives.