Immigrants to Australia

[:)]Hello I am new here & just poking around a bit. My main enquiry is my GULLOFSEN research. My GGG Grandfather was Martin Gullofsen. He was a ship master. I believe he came from Norway. Any clues/leads would be great. I see the first of the family (Martin junior) being born in Paddington NSW Australia in 1872. Would love to hear from anybody. Thanks Kym, Australia