Giovanni Andrea Sirani (1610-1670) Hercules Slaying the Hydra. Brown wash on paper, 205 x 146 mm Folkestone Museum (Master Collection) F.3644.57 The man with a club is mythical Greek hero Hercules. He is wearing a lion skin. The monster has seven heads. It is a Hydra, or watersnake. Hercules personified physical strength and courage. His battle with the Hydra was the second of hisTwelve Labours,