825 - Grímur Kamban arrived at Faroe islands

Faroe islands
Grímur Kamban arrived at Faroe islands where the only inhabitants he found was sheep and birds, he chose to settle at Funningur at Eysturoy.
Faroe Island viking settlement

Germany

In Aachen a new peace treaty was signed by Franks and Danes.
Denmark
Danish coinage in Hedeby began, the coins were copies of Frankish motives, many were showing ships.
Ireland
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.
Scotland
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.