Swaziland's royal council deposed Queen Regent Dzeliwe in 1983 after Sobhuza II died

Sobhuza II became king of the Swazi in December 1899 as an infant and was installed in December 1921. He reigned until his death in August 1982. Wikipedia counts the reign at 82 years and 254 days, and cites the Swaziland National Trust Commission for 70 wives and about 210 children^†. Under Swazi custom the Queen Mother becomes Queen Regent and head of state between kings. In June 1982, two months before his death, Decree No. 1 made the Liqoqo, a royal council, the Supreme Council of State. Its chairman, the "Authorised Person," could act for the regent if she was "for any reason unable" to. After Sobhuza's death Queen Dzeliwe, one of his widows, was chosen to rule as Queen Regent. In February 1983 Prince Makhosetive, then about 15, was named heir and was to succeed at 21. In March 1983 the prime minister, Prince Mabandla Dlamini, was replaced. Dzeliwe tried and failed to dismiss three ministers and the army commander. On 10 August 1983 the government announced in two special papers that she had been deposed. Ntombi La Thwala, another widow of Sobhuza and Makhosetive's mother, replaced her as Ndlovukazi. Makhosetive was crowned King Mswati III on 25 April 1986, six days after his 18th birthday^†, three years earlier than announced. The Liqoqo was dissolved in 1986^†.