Seems wild boar became extinct in Ireland in the 12th century so seems odd to have a hunting dog and a wild boar on an Irish dish ring (wild boar became extinct in England a century after Ireland but were reintroduced before becoming extinct again in the 17th century). Irish rococo dish rings had scenes with shepherds, girls, farm animals, foxes, birds, leaves, fruit and the like as well as typical rococo scrolls. Later 18th century dish rings included trellis patterns and arabesque piercings embellished with festoons in neo-classical style.
This dish ring looks more modern, perhaps late Victorian. Could it be English? See one below, London 1899.