Although the extant Orphic sources do not mention the name “Zagreus” in connection with this dismembered Dionysus (or anywhere else), the (c. 3rd century BC) poet Callimachus perhaps did. We know that Callimachus, as well as his contemporary Euphorion, told the story of the dismembered child, and Byzantine sources, quote Callimachus, as referring to the birth of a “Dionysos Zagreus”, explaining that “Zagreus” was the poets’ name for a "chthonic" Dionysus, the son of Zeus by Persephone. The first certain identification of Zagreus with the dismembered Dionysus, occurs in the writings of the late 1st century – early 2nd century AD biographer and essayist Plutarch, while the c. 5th century AD Greek epic poet Nonnus' "Dionysiaca", which tells the story of this Orphic Dionysus, calls him the "older Dionysos ... illfated Zagreus", "Zagreus the horned baby", "Zagreus, the first Dionysos", "Zagreus the ancient Dionysos", and "Dionysos Zagreus".