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.

Duke of York is a title of nobility in the Peerage of the United Kingdom. Since the 15th century, it has, when granted, usually been given to the second son of English monarchs. The equivalent title in the Scottish peerage was Duke of Albany. However, King George II and King George III granted the titles Duke of York and Albany.