Good spot. Don't know what was on the program (was there one, Gary?) but at that time the country the team represented was called the Irish Free State (Saorstát Éireann).
Not sure about his for a couple of reasons.
First of all it was on 18th April 1949 that the Republic of Ireland Act came in to force and this was what provided that the Republic of Ireland should the the official description of the state. Our first game after that date was a week later against Belgium (again!) on the 24th of April - is it not therefore likely that this was the first game for the Republic of Ireland?
Secondly we didn't play Norway in May 1954 according to RSSF: http://www.rsssf.com/tablesi/ier-intres.html. You must have been thinking of the game in Nov 1954 or else the game in Oslo in May 1955.
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