Viliami Tupoulahi Mailefihi Tuku'aho

Suffering from diabetes since several years, and after suffering an amputation of both legs due to this reason, he was hospitalised again on the Beginning of June 2014 and died in hospital on 14 June.

Tuku'aho was the youngest son of Prince Fatafehi Tuʻipelehake. He inherited the Tuʻipelehake title after his brother Prince Sione ʻUluvalu Ngu Takeivulai Tukuʻaho died in a car crash in the United States in July 2006. He was the seventh title holder since its institution in the 19th century.

He served as Noble Representative from Tongatapu from 2006 to 2007, then as Noble Representative from Ha’apai from 2008 to 2009. In 2009 he was appointed Minister of Agriculture, Forestry and Fisheries. Following the 2010 election he was not reappointed to Sialeʻataongo Tuʻivakanō's cabinet.

He was married four times. In 1983 he married a commoner, Mele Vikatolia Faletau, renouncing his princely title in order to do so. They had two children. His princely title was however restored by King George Tupou V in 2008. His fourth marriage, in January 2011, followed the divorce of his third wife, ʻEneʻio Tatafu. He then married Fifita Holeva Tuʻihaʻangana, from a noble family, Lord Tuʻihaʻangana's sister.

He briefly served in the Tonga Defence Services from 1979 to 1981. He was the Military Liaison Officer at the Foreign Affairs Ministry from 1980 to 1981. From 1986 to 1992, he was the Director of the Navy Department.

Mailefihi was a high level sportsman, being captain of the Tonga national rugby sevens team in the late 1970s. It was that team which won the golden medal at the 1979 Pacific Games in Suva, defeating Fiji, the host country, in the final. He was also the Tonga national rugby union team head coach during the 1987 Rugby World Cup, as well as manager of the Tonga national team at the 1995 Rugby World Cup.

The prince Viliami Tupoulahi Mailefihi Tukuʻaho (17 June 1957 - 14 June 2014 ) was a Tongan politician and Cabinet Minister, member of the royal family, and holder of the Tuʻipelehake prince title, one of the thirty three titles of the Tongan hereditary nobility.