Amund Rasmussen

My Great Grandfather Amund Rasmussen is proving rather elusive to trace. He came to South Africa in the mid 1800's and according to family folk lore was shipwrecked in Algoa Bay (The bay on which Port Elizabeth stands). We know nothing of him until he appears in the Orange Free State as a farmer with at least two farms and a store in the town of Winburg. He died during the Anglo Boer war fighting for the boers. Family legend has it he came from Somewhere near Kopervik on Karmoy. We don't know how old he was when he left, if he was an immigrant or a sailor. Again ledgend has it the ship was the 'Norman' but the only trace I can find is of the ship docking in Cape Town in 1895 which would be too late for him to acuire farms a wife and several children by the time the war broke out. Any assistance would be appreciated in finding when he left Norway as that would help tremendously with finding the South African bits