They are Mr Pohiva's eldest son, Siaosi, and noted scientist Netatua Prescott Taufatofua.
'Akilisi Pohiva held the Tongatapu seat of Kolomotu'a for 32 years, often winning by huge margins.
Our correspondent in Tonga says Siaosi Pohiva will contest the November 28 by-election on the same plank his father used -- advocating for transparency and good governance.
Kalafi Moala says Ms Taufatofua is promising action on long ignored local issues.
