The settlement was founded on the island of Tristan da Cunha in 1816 by a Sergeant
William Glass from
Kelso, Scottish Borders after the UK annexed Tristan da Cunha. A military garrison was maintained on the islands as a guard against any French attempts to rescue
Napoleon, who was imprisoned on
Saint Helena. The military garrison remained until the end of
World War II. It is named after
Prince Alfred, Duke of Edinburgh, the second son of
Queen Victoria, in honour of his visit to the island in 1867. Edinburgh of the Seven Seas is the only settlement of Tristan da Cunha, and contains a small port, the Administrator's residence, and the post office. It was damaged in a volcanic eruption on the island in 1961, which forced the entire population to abandon the settlement and evacuate to
Calshot in the UK. The eruption destroyed the
crayfish factory. Most of the islanders returned in 1963. The harbour was named Calshot Harbour, after their temporary home during the eruption. ==Geography==