1869 Maryland Crossing- Articles- John Headland

In the "Articles" part of this web site, I found that the log my Great Grandfather had kept during the voyage 1869 had been provided. What I am having a difficult time with is the passenger list, in Norwegian of course. I am pretty sure that the passenger Johannes Helland and wife are my Great Grand Parents- but the names are not what our "English" name became (Headland). They were also travelling the family of my Great Grandmother, her parents and unmarried sisters, but I cannot locate her maiden name at this time. Is there any way to confirm the passengers and names listed? Also, how do I obtain information on them prior to leaving Norway? Any help would be greatly appreciated!