Aleamotua's achievement was to turn his people to the Christian faith, regardless of whether they were from London Missionary Society, or were Methodist or Catholic, or were Islanders or Europeans. His approach to advancing the Christian faith was to visit his enemy to talk and even to sleep in their midst, which was uncommon in those days. It was originally viewed as weakness, but eventually succeeded. His unselfish request for assistance and choosing his grandnephew King George Taufa'ahau of Ha'apai and Vava'u as his protector and successor unified Tonga under the Christian Faith. Aleamotua's achievement for his people showed that he deserved both of his other names: "Josiah," the King of Israel who destroyed the idols and turned his people back to God, and "Tupou" in Tongan, meaning "the strong one." Aleamotua was survived by his wife Mary Moala (Melemoala) and their four children, who stayed at his residence of Mata'otuliki in Nuku'alofa. While the children had grandchildren and spread throughout Tonga, two sons are of note: the oldest, Henele Ma'afu 'o Tu'i Tonga, and his brother Niumeitolu. Henele or Enele (Henry) Ma'afu 'o Tu'i Tonga went to Fiji, and later became the 1st Tu'i Lau of Fiji. After Ma'afu's death in Fiji, his young son Siale'ataongo returned to Tonga. Siale'ataongo fathered Vahoi, who was the great-grandmother of HM Queen Halaevalu Mata'aho. Ma'afu is buried at the chiefly burial grounds of the Lauans – the Vatanitawake at the Sau Tabu in Tubou, Lakeba. Niumeitolu went to Samoa and married a Samoan by the name of Fa'asiena. He founded a village with Tongan supporters and his wife's relatives. While in Samoa, he supported Ma'afu's war in Fiji with guns and war supplies from the Germans in Samoa. After his brother's death, he returned to Nuku'alofa with his family and lived in their family residence of Mata'otuliki and Fotu'aikata'ane. He died on a trip to Samoa, and was buried at the edge of their village outside Apia.