Olaf Diserud(Disrud)

I am trying to find record of my grandfather, Olaf Diserud or Disrud. He was from Aurdal in Valdres. He emigrated to USA 14.05.1886(17 year old).The ship name was Marstin and he was living in Dunlop Iowa. I think he was back in Norway in 1906 and then return to USA over Ellis Island the 7 mar 1906. He was then living in Soldier Tennesee. He then return to Norway, and in 1923 he maried my grandmother Anne her in Norway. I appreciate any help.[:)] Please contact me att: [email hidden]