After his adoption of Christianity, Tāufaʻāhau repudiated all his secondary consorts and their children and made Lupepauʻu his principal wife.

[2][3] After their conversion, Tāufaʻāhau took the name George Tupou I in honor of King George III of the United Kingdom while Lupepauʻu was named Sālote or Charlotte after Queen Charlotte of the United Kingdom.

Their children were the only heirs of Tupou I considered legitimate and eligible to succeed to the Tonga throne under Christian law and the childless death of Vuna in 1862 left the question of succession.

The succession would remain vacant for thirteen years until the promulgation of Tonga's first constitution in 1875, which legitimized Tupou's illegitimate son Tēvita ʻUnga and named him Crown Prince.

[5] In 1854, she sat for a watercolor portrait painted by British geologist James Gay Sawkins.