George Tupou V (Tongan: Siaosi Tupou V, full name: Siaosi Tāufaʻāhau Manumataongo Tukuʻaho Tupou V; 4 May 1948 – 18 March 2012) was the King of Tonga following the death of his father, Tāufaʻāhau Tupou IV in 2006, until his own death six years later.

Tupou V was born on 4 May 1948. He was the eldest son of King Tāufaʻāhau Tupou IV (1918–2006) and Queen Halaevalu Mataʻaho ʻAhomeʻe (born 1926). He was appointed Crown Prince on 4 May 1966. In that role, he was better known by one of his traditional chiefly titles, Tupoutoʻa.

http://en.wikipedia.org/wiki/George_Tupou_V