Prime Minister of Thailand Rajanubhab took over this role. In fact, the office most considered the precursor of that of the prime minister was the ancient office of "Samuha Nayok" (สมุหนายก), which was run by an "Akkhra Maha Senabodi" (อัครมหาเสนาบดี) or "chief minister in charge of civilian affairs". The first Prime Minister of Siam was Phraya Manopakorn Nititada, a judge. The title of the office was changed from "Prime Minister "of Siam"" to "Prime Minister "of Thailand"" in 1945 and then permanently with the renaming of Siam to Thailand in 1949. For most of its existence the office has been occupied by Army leaders;
Prime Minister of Nepal council of ministers shall continue to work until another council of ministers is constituted. Provided that, in the case of the death of the Prime Minister, the senior most minister shall continue to act as Prime Minister until a new Prime Minister is appointed. As of 2019, there are following living former prime ministers: Prime Minister of Nepal The Prime Minister of Nepal () is the leader of the executive body (i.e. the Government of Nepal). The prime minister is the head of the Council of Ministers of Nepal. He/she should be member of the House of the Representative Pratinidhi