George Tupou V Oxford University and the Royal Military Academy Sandhurst in England. Tupou V was appointed Crown Prince on 4 May 1966. In that role, he was better known by one of his traditional chiefly titles, "'Tupoutoʻa". In 1974, though unmarried, Tupou V had a daughter, 'Ilima Lei Fifita Tohi. In 1997 she married police officer Tulutulumafua i'Olotele Kalaniuvalu, and has three children. According to the Constitution of Tonga, ʻIlima is ineligible to accede to the throne as only children born of a royal marriage may succeed. As Crown Prince, Tupoutoʻa held great influence in Tongan politics, and was Minister for Foreign
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