Is there an Irish story that speaks of a ring given to a Lord by his lover?

There is the Irish story of King Bres who became a high king because Nuada of the silver hand was forced to give up being the king because of his mutilation. He was not a good king because he taxed his subjects heavily. The poet Corpry mocked the king with the first satire of Ireland. A magical healer made a silver hand for Nuada and the warriors chose Nuada to be their king and set Bres aside. Bres went to speak to his mother and asked about who his father was. His mother brought out a ring given to her by her lover to keep for a man whose finger it would fit. Bres set out to his Formorian father who recognized the ring and gave his son an army.