Talofa Kinereta - sori not to reply earlier. Been on holiday. Your grandfather (Asa) was the only brother to my grandmother (Asonei) and Tanuvasa Livi's mum (Ososo). I know the names you have given. Its a bloody small world aye.
We live in Lower Hutt NZ, got 2x sons, 1 daughter & 3 grandchildren.
Say hello to your mum....cheers