Princess Sinaitakala Tukuʻaho (née Sinaitakala Tu'imatamoana 'i Fanakavakilangi Fakafānua; 20 March 1987)[1] is a Tongan royal and wife of the Crown Prince of Tonga, Tupoutoʻa ʻUlukalala her second cousin, whom she married on 12 July 2012.

[1][4] The marriage caused controversy in Tonga, since Fakafānua and Crown Prince Tupoutoʻa ʻUlukalala are double second cousins.

[1][5] That is, her parents are each the first cousin of the King: The wedding was opposed by some members of the royal family, reportedly due to the close genetic relationship of the couple.

[2] The wedding marked the first marriage of a Tongan crown prince in sixty-five years.

[1] Her son, Prince Taufaʻahau Manumataongo, was born on 10 May 2013 and is second in the line of succession to the Tongan throne, after his father.