[pyrale]

Ireland had viking settlement activity in the 800s and 900s. Newly formed settlements/kingdoms were consumers of slaves to further develop. But also, maybe they were named simply because Irish viking rulers had close ties with York, and therefore, there was more trade between nearby and politically close viking kingdoms.

[ywvcbk]

The local Irish had a long tradition of engaging in slave trade (and raiding) themselves, though e.g. St. Patrick