Einarr's rule over the Orkney Islands came to an end around 1470. According to the Wikipedia article on Torf-Einarr, "Einarr established a dynasty which ruled the Orkney islands until 1470." This information is consistent across multiple sources, marking 1470 as the approximate end of Einarr's dynasty's rule over the Orkney Islands.
When did the IRSSA come into effect and what was the duration for the fundraising obligation?
Which couple won the public's favorite in the semifinals?
What prompted Long John Baldry to formally come out in 1978?
Which dance styles were performed in Week 6's individual dances?
What reasons did Robert Christgau give for his less favorable review of the album?