His adoptive father, King Muagututi'a, was a direct descendant of Fofoaivaoese. Tupua Fuiavailili was thus the first King to be descended from Queen Salamasina through both her children, Fofoaivaoese and Tapusatele.
Tupua Fuiavailili's adoptive father, King Muagututi'a, was a direct descendant of Fofoaivaoese. This made Tupua Fuiavailili the first monarch to have a dual lineage from Queen Salamasina through both her children, Fofoaivaoese and Tapusatele.