The son of a London Missionary Society pastor, Peseta was educated at government schools.
[1] He also became a well-known Iiga songwriter alongside two brothers including Toleafoa Talitimu.
[2] After the death of Fautua Mata'afa Faumuina Fiame Mulinu'u I in 1948, the Fono of Faipule requested that they be allowed to elect a twelfth member to the Legislative Assembly to replace him.
This was authorised by the Samoa Amendment Act 1949, and Peseta was elected by the Fono to be the twelfth member on 1 April 1950.
In 1958 he was appointed to the Public Service Board of Appeal for a three-year term.