It all looks rather like what happened in London. At a certain point, Porter went into terminal decline in Ireland. In the early 1960s, it stopped being a mainstream beer. At least in the Republic of Ireland. It remained reasonably popular in Norther Ireland, particularly in Belfast. And that’s where the last Guinness Porter was served in the early 1970s.
|Guinness sales in Ireland 1946 - 1955|
|Year||Extra Stout||Porter||total||% Porter|
|"A Bottle of Guinness please" by David Hughes, pages 276-279.|