James Lister and his sister Pauline Lister

James(Jim) Lister (Glasgow)emiigrated to NZ 1920's - I am trying to trace my grandfathers family. He was James (Jim) Lister from Glasgow. He came to NZ in the early 1920's - he was in the 1st World War Army I think. He had a blind sister - Pauline Lister. His father was a customs agent in Glasgow. He married my grandmother Mavis Walker and had one child - my mother Linley. Any information would be greatly appreciated.