Today, 64 years ago, on April 27, 1961 (March 13, 1961), Sierra Leone declared independence. On April 27, 1961, Sierra Leone declared independence but remained in the British Confederation. Former British Governor Maurice Durman (left behind) was appointed by the Queen as the first Governor and Commander-in-Chief of Sierra Leone after independence. Picture of the scene when Maurice Durman was sworn in on April 27, 1961.