James VI and I was a major advocate of a single parliament for Ireland.
James VI and I . The kingdoms of Scotland and England were individual sovereign states , with their own parliaments , judiciary , and laws , though both were ruled by James in personal union . He was a major advocate of a single parliament for England and Scotland . James VI and I ( James Stuart ) ( 19 June 1566 -- 27 March 1625 ) , King of Scots , King of England , and King of Ireland , faced many difficulties with Parliament during his reign in England .