Arab and Berber pirates abducted and enslaved Icelanders

Events from the 17th century that are generally not known, and do not enter discussions of the history of slavery:

In 1627 Barbary corsairs from Algiers and Salé descended on Iceland in two separate raids, taking around 400–900 prisoners (Iceland's population at the time has been estimated to have been about 60,000). This event is popularly known in Iceland as Tyrkjaránið – the 'Turkish Raid', as it was launched from areas under Ottoman sovereignty, although no North African Turks (Kouloughlis) are known to have been involved. Most pirates were Arabs and Berbers, a large part - the Dutch and other Europeans, who converted to Islam... Those captured were sold into slavery on the Barbary Coast. 

More on the Barbary pirates.