933 – Óláf Guthrithsson goes to Ireland.
Two researchers in York and Glasgow will lead a new project on Viking history.
919 – Battle of Islandbridge
Archaeologists have found an important new clue to the origin of Dublin on a construction site in the city centre. The Vikings first settled here in 840 CE near Dubh Linn. And this dark tidal pool turns out to be much larger than previously believed.