Informação

I am asking for anyone who could possibly help me. I am in search of my maternal grandfather. I know his last name is Amano. His first name is possibly so variation of Sanjie, Sergie, or Sergio. He was in the Philippines sometime between 1943 - maybe 1947. He married my grandmother in Sta. Ana Church in Manila. I don't know if he even knows that he has a daughter. To whoever could help me, thank you very much in advance.