Tui Ātua Tupua Tamasese Tupuola Tufuga Efi (born Olaf "Efi" Tamasese; 1 March 1938) is a Samoan political leader and as holder of the maximal lineage Tama-a-'āiga title of Tupua Tamasese, is one of the four paramount chiefs of Samoa. He also holds the royal pāpā title of Tui Atua ('sovereign' of Atua). Tui Ātua served as the third prime minister of Samoa from 1976 to 1982 and again later in 1982. On 16 June 2007, he was elected as Samoa's Head of State (O le Ao Mamalu o le Malo) from 2007 to 2017. He was sworn in at Samoa's Parliament (Maota Fono) on 20 June 2007. Personal life Tupua was born on 1 March 1938 at Moto'otua in Samoa. He is the son of Samoa's first co-Head of State, O le Ao Mamalu o le Malo Tupua Tamasese Meaʻole (1905–1963) and Irene Gustava Noue Nelson, of Samoan, Swedish and British descent. He is also the nephew of Samoa's celebrated independence movement leader, Tupua Tamasese Lealofi III and the cousin of the nation's second Prime Minister, Tupua Tamasese Lealofi IV. Tupua attended primary school at the Marist Brothers School at Mulivai in the Samoan capital of Apia. He continued his education at St. Patrick's College in Silverstream, Wellington, New Zealand. He was also educated at Victoria University of Wellington, in New Zealand's capital city. Tupua is married to Masiofo Filifilia Imo, who is also known as Masiofo Filifilia Tamasese. Prime Minister of Samoa Tupua began his political career in May 1965, when he was elected to the Legislative Assembly from the Vaisigano No. 1 constituency. He served as Samoa's Minister of Works from 1970 until 1972. Tupua served as prime minister for two consecutive terms from 1976 to 1982. He also served as deputy prime minister from 1985 to 1988. It was during his second term as Prime Minister that the Public Service Association went on a general strike in 1981, paralysing the country for several months and paving the way for the opposition Human Rights Protection Party's entry to government in 1982. The party would go on to hold power until 2021. Tupua became Leader of the Opposition following his Christian Democratic Party's election defeat in 1982. He also headed the Samoan National Development Party. He continued to serve Anoama'a East as MP until 2004 when he became one of the two members of Samoa's Council of Deputies