Cledwyn Hughes, Baron Cledwyn of Penrhos, was a Welsh Labour Party politician, usually associated with the moderate wing of the party. He was also regarded, particularly in later years, as a non-political figure of stature in Wales having held posts of importance in bodies such as the University of Wales.

Ynys Môn is a constituency of the House of Commons of the Parliament of the United Kingdom. It elects one Member of Parliament (MP) by the first past the post system of election. It is one of five 'protected constituencies' within the UK, with boundaries defined by the Parliamentary Constituencies Act 2020 to be fixed to those of Isle of Anglesey County Council.