Looking for Peter Andreas Petersen Help.

Hi, trying to find information on Peter Andres Petersen. He married in New Zealand 1920. Has on his marriage cert age 40 so i guess born abt 1880. Father Peter Petersen, Ships Captain, Mother Anna Elizabeth Svenumsen/Svenungsen (son) hard to decipher the writing. Apparently he was born in Sweden but registered in Oslo Norway. Don't know when he arrived in NZ or if he went to Australia first. Hoping someone may know this family, thank you.ps Story is he came with a brother.