The original inhabitants were the Lepcha people, who named their home "Kurseong", because every spring it was alive and bright with Kurson-Rip orchids. In the remote past, Kurseong was a part of the Kingdom of Sikkim, even before the British came to India. However, in around 1780 the Nepalese conquered and annexed Kurseong and its surrounding areas. Then came the Gurkha War, which the Nepalese lost. The 1817 Treaty of Titalia restored Kurseong to Sikkim.