825 - Grímur Kamban arrived at Faroe islands

Faroe islands
Grímur Kamban arrived at Faroe islands, he had Irish slaves with him, and may have come from the Hebrides or the Isle of Man. where the only inhabitants he found was sheep and birds, he chose to settle at Funningur at Eysturoy. Irish monk Dicuil wrote that it took 2 days sail there from Ireland, and that the islands had been inhabited by Irish hermits for hundreds of years, but that Norwegian Vikings had forced them out. Thirty years before this was written, Norse ships arrived among the islands. The hermits chose to leave the islands as the solitude they sought was lost.

Faroe Island viking settlement
In Aachen a new peace treaty was signed by Franks and Danes.
Danish coinage in Hedeby began, the coins were copies of Frankish motives, many were showing ships.
Vikings landed in Wexford Bay, Ireland and marched west to Taghmon at St. Mullins', sailed northwards by boat to Leoghlin Bridge and into Ossory County, then to Inistioge where they were finally turned back by the local Irish armed men. The Vikings made their way to Waterford, where they sailed round to the Youghall harbor and plundered the monastery of St. Molaise. Finally, they raided in Kilpeacon in Limerick County and Dun Lagan near Glendalough.
Vikings captured the Hebrides. Viking raiders attacked Iona and killed abbot Blathmac and the rest of the brothers " with mad savagery" while looking for loot.
Battle of Altamira, vikings were defeated by Arabs.
A battle took place by the foot of a mountain that Muslims called Djabal al-Madjus. A madjus was a fire-worshipper, or heathen, and this was the term used by the Muslims to refer to the Vikings. The placee of the battle was probably beside Mount Sollube, north-west of Guernica.