Well, there was no Hot Dog on a Stick as such and the only Wet Seal was, well, a real wet seal. But excavations revealed that there was much trading going on on this tiny island, from traders as far away as Russia, Germany, Iceland, and France.
It was a trader's paradise, since your foreign money was no good there. Furs for wine, pottery for shoes...you get the picture. According to a story in the BBC News:
"This little speck of an island had a very high significance to the wealth of the Ulster Kingdom," explains Tom McErlean from the Centre for Maritime Archaeology.
"Dal Fiatach, or the Kingdom of Ulster, was a great maritime kingdom. It was fairly cosmopolitan with connections all around the North Sea."
The particular kind of pottery found at Dunnyneil Island is evidence that luxury goods were imported in some quantity from the continent. The coast around Strangford Lough has the highest density of this type of pottery ever discovered in Ireland, suggesting the Kingdom of Ulster was relatively wealthy.
"Dunnyneil played a big role in creating their wealth … [it] would have been a profitable stopping point for foreign wine merchants. The Irish kings valued wine very much. There was a big market for wine here. It would be very much worthwhile," said McErlean.
For the whole story, go here.