Lismore Castle is a castle located in the town of Lismore, County Waterford in the Republic of Ireland. It belonged to the Earls of Desmond, and subsequently to the Cavendish family from 1753. It is currently the Irish home of the Duke of Devonshire. It was largely re-built in the Gothic style during the mid-nineteenth century for the 6th Duke of Devonshire.

Earl of Cork is a title in the Peerage of Ireland, held in conjunction with the Earldom of Orrery since 1753. It was created in 1620 for Richard Boyle, 1st Baron Boyle. He had already been created Lord Boyle, Baron of Youghal, in the County of Cork, in 1616, and was made Viscount of Dungarvan, in the County of Waterford, at the same time he was given the earldom. These titles are also in the Peerage of Ireland.