Martin Fuhrman born 1814 in Hungary

I am new to the searching game. My father died in 1994 so I have been without any help. So far I have got back to Martin Fuhrman, wife Barara(Barack)Fuhrman.Born in Hungry (although from German parentage) around 1814 and came to the U.S.A. 1858. First settled in Indiana then in Independance, Iowa. Only know of one son also named Martin Fuhrman who married Mary N. Maloney of Irish decent. They moved to the Goldendale area of Washington state. Known children are thomas, Martin, Winifred,James,Margaretta, Charles, and Frederick(my g-grandfather). Need more help to go any farther Please help this lost sole.