Map of bressay shetland, online map
Inthis agreement was expanded to include mutual free trade. Smallpox afflicted the islands in the 17th and 18th centuries, but as vaccines became common after the population increased to 40, in The latter commenced the building of Scalloway Castlebut after his imprisonment in the Crown annexed Orkney and Shetland again until when Charles I granted them to William Douglas, 7th Earl of Morton. Shetland then went into an economic depression as the Scottish and local traders were not as skilled in trading with salted fish.
Shetland was Christianised in the 10th century. Alexander III drew out the negotiations while he patiently waited for the autumn storms to set in.