Because of so many assassination attempts on the Tu'i Tonga, Kauulufonua established a new dynasty called the "Ha'a Takalaua" in honour of his father and gave his brother, Mo’ungamotu’a, the title of "Tu’i Ha’atakalaua". This new dynasty was to deal with the everyday decisions of the empire, while the position of Tu’i Tonga was to be the nation's spiritual leader, though he still controlled the final say in the life or death of his people. The Tu'i Tonga "empire" at this period becomes Samoan in orientation as the Tu'i Tonga kings themselves became ethnic Samoans who married Samoan women and resided in Samoa. Kau'ulufonua's mother was a Samoan from Manu'a, Tu'i Tonga Kau'ulufonua II and Tu'i Tonga Puipuifatu had Samoan mothers and as they married Samoan women the succeeding Tu'i Tonga – Vakafuhu, Tapu'osi, and 'Uluakimata – were allegedly more "Samoan" than "Tongan."