Pettersson, John Walfred Norrkoping Sweden

[A. Peterson]

I am searching for my husband's great grandfather's family.  John Walfred Petterson was born in the 1870/80s? and lived in Norrkoping.  He had a brother who was a doctor and a sister who was a nurse.  His family wanted to make him a priest so he ran away in the merchant navy aged 14 and ended up coming to Australia. He died in Australia in 1936.  He married an Irish lass named Mary Ann Hartigan and they had three children. His first wife died in child birth and he remarried Olivia Mette Neilsson. His father in Sweden was also named John (Johan??) and was a Woollen Mills Operative.  Can anyone help with more details/history?