Minor deity

This small brown butterfly visited a frangipani bush in our garden. The closest I can get with identification is Brown Ochre, Trapezites iacchus (Brisbane Insects webpage has information). It is also known as Iacchus Skipper. 

Wikipedia says that Iacchus was the name of 'a minor (Greek) deity, of some cultic importance ... but without any significant mythology'. I'd love to know how this small butterfly got its name, but all my googling has been in vain.