I think perhaps Reticent is being a little tongue in cheek in his entertaining post. I think we have a regurgitation of that historical howler that the Irish have Spanish blood from the sailors shipwrecked during the violent storms of the Armada (Imperial Spains attempt to subdue Elizabeth Tudor's England - they had bigger ships, more guns, and no military ethics) but the truth is very few Spaniards were washed ashore on irish beaches. The few that did were quickly dispatched by the native Irish.
Of course in prehistoric times the pre Celtic settlement of Irealnd was from Iberia, however the modern Irish in early 20th century anthropometric surveys were and are taller and of better general physique than other N.W. European nationalities. A survey in FORUM 1990s suggested the Irish male had a larger penis. Of course there are always the exceptions which prove the norm: Tom Cruse and Liam Neeson being at the extremes; I leave it to lpsg members to guess which is where on the penisometre.
Should anyone doubt my veracity I feel obliged to register my "interests" as they say in political circles. I am Anglo-Irish with some Spanish blood so feel I can offer my views on this pressing issue. Ha!