Transcription error?
gthorudIn the list See ship list: http://www.norwayheritage.com/p_list.asp?jo=202 number 40 states "Slodsvolden", this could be a transcription error for Slagsvolden. The whole family matches one that emigrated from the Slagsvolden farm in Nordre Land in 1849. Also no 25 in the same list should most likely be "Thomle" not "Thomli", also from Land. There are a lot of names from Land, Hadeland and Biri on this list.
BorgeHi Yes, that might be them. The passenger list is very hard to read, but I am certain there is no "g" in the name, could be a misspelling "Sladsvolden" in stead of "Slagsvolden" with an "a" rather than an "o". I'll produce a scan of the list if anyone would like to give it a second opinion.