Peter A. Martin, farm Aarevald, Ramnes, Vestfold

Wish to find the name of the ship on which Peter Anton Martin sailed about 1870 probably from Christiania. Did he go directly to New York or stop at another port? Peter was born 1854, farm name Aarevald, Ramnes, Vestfold. He is said to have landed at Castle Garden, New York City in 1870. He died in 1921 in St. Cloud, Minnesota, USA. Not found, as yet, on police registers of seamans lists of youngsters. This man is my husband's grandfather.