Tāufaʻāhau Tupou IV Zealand, and the United Kingdom, specifically; and Samoa's head of state, Malietoa Tanumafili II. Tāufaʻāhau Tupou IV Tāufaʻāhau Tupou IV (4 July 1918 – 10 September 2006), son of Queen Sālote Tupou III and her consort Prince Viliami Tungī Mailefihi, was the king of Tonga from the death of his mother in 1965 until his own death in 2006. Immediately prior to his death, he was the fourth longest-reigning living monarch in the world after Kings Bhumibol Adulyadej of Thailand, Abdul Halim of Kedah of Malaysia and Queen Elizabeth II of the United Kingdom. He was married to Queen Halaevalu
George Tupou II of 18, upon the death of his great-grandfather George Tupou I, at which time he was still a bachelor. In 1896, the chiefs of the country urged him to marry and produce an heir. After her death, the chiefs suggested a new wife, ʻOfa-ki-Vavaʻu, the daughter of Māʻatu from Niuatoputapu, who was related to the Tuʻi Haʻatakalaua line. George, however, refused. Instead, on 1 June 1899, he took Lavinia Veiongo (1879–1902) as wife. She was the daughter of Kupuavanua from Vavaʻu and Tōkanga from Niuafoʻou, thus obliging these islands to the throne. Kupuavanua was also, through his mother Lavinia Veiongo