| Prince Fatafehi Tu'ipelehake of Tonga | |
| Succession: | Prime Minister of Tonga |
| Reign: | 16 December 1965 – 22 August 1991 |
| Reign-Type: | Term |
| Reg-Type: | Monarch |
| Regent: | Tāufaʻāhau Tupou IV |
| Reg-Type2: | Deputy |
| Regent2: | Mahe Tupouniua Siosaia Aleamotuʻa Tuita Baron Vaea |
| Predecessor1: | Crown Prince Tupoutoʻa-Tungī |
| Successor1: | Baron Vaea |
| Spouse: | Princess Melenaite Tupoumoheofo Veikune |
| Issue: | Princess Mele Siu’ilikutapu Princess 'Elisiva Fusipala Vaha'i Prince ʻUluvalu Takeivulangi Princess Lavinia Mata-ʻo-Tāone Princess Sinaitakala 'Ofeina 'e he Langi Prince Viliami Tupoulahi Mailefihi |
| Father: | Viliami Tungī Mailefihi |
| Mother: | Sālote Tupou III |
| Birth Date: | 7 January 1922 |
| Birth Place: | Royal Palace, Nuku'alofa, Tonga |
| Death Place: | Auckland, New Zealand |
| Burial Place: | Mala‘e Kula |
| Religion: | Methodism |
Prince Fatafehi Tuʻipelehake (Sione Ngū Manumataongo; 7 January 1922 – 10 April 1999)[1] was the youngest son of Queen Sālote Tupou III of Tonga. He was the prime minister of Tonga from 1965 to 1991, a record tenure of over 25 years, serving under his brother King Tāufaʻāhau Tupou IV.
Tuʻi Pelehake attended Newington College, Sydney, (1941–1942)[2] and Gatton Agricultural College, Queensland, Australia.[3] On 10 June 1947, Fatafehi married (13 November 1924 – 16 March 1993) in a double marriage ceremony with his older brother, the Crown Prince (at the time known as Tupoutoʻa-Tungī), who also married Halaevalu Mataʻaho ʻAhomeʻe.[4] He received the title Tuʻi Pelehake (Fatafehi) from his mother (Queen Sālote) in 1944, and he also received the second-highest title of Tonga, Tuʻi Faleua (king of the second house).
From a non-traditional side, he was conferred an honorary CBE in 1966. He inherited from his mother an artistic side; he was a well-known poet and composer.
His career was with his brother in the government. His first assignment was as governor of Vavaʻu (1949–1952), later of Haʻapai (1952–1953), and he then served as Minister of Health and Lands.[5]
In 1965 he took over as Prime Minister of Tonga when his brother had to vacate the post on becoming king. He remained prime minister until he resigned in 1991 due to serious health problems.[1] His last years were spent in a wheelchair on a life support system.
He kept the both titles of Tuʻi Pelehake and Tuʻi Faleua for so many years, that they became synonymous with him. But after his death, only the former was conferred to his son ʻUluvalu, while the latter returned to the king.
He died on 10 April 1999 in Auckland after a long illness.[6]
Besides his son who inherited his positions, he also had four daughters and two sons :
Tonga: Knight Grand Cross with Collar of the Royal Order of Pouono Tonga: Knight Grand Cross of the Order of the Crown of Tonga Tonga: Recipient of the Royal Tongan Medal of Merit Tonga: Recipient of the King Tāufaʻāhau Tupou IV Silver Jubilee Medal
United Kingdom: Knight Commander of the Order of the British Empire (1977) United KingdomRecipient of the Queen Elizabeth II Coronation Medal