According to Greek mythology, Oineus (also known as Oeneus) was king of the city of Calydon in Aetolia and a grandson of the god of war, Ares. He was visited by Dionysus and showed him great hospitality and honour. Thereupon the wine god gave him a vine and instructed him in viticulture. In his honour, the plant was henceforth called Oineus, from which Oinos, the Greek name for wine and also oenology (oenology) is derived. According to another version, however, the shepherd Staphylus brought a vine to the king and taught him how to grow vines. See also under wine gods and wine saints.