but this Norway Genealogy Forum website has some quirks which make it hard for you to see the replies - who ever replies to you has to reply directly to YOUR posting, not to a posting of someone who answered you.Take a look at the above link, and you can see that Harald Storaker has found quite a bit of information for you on the Norwegian records.
using google, I find that Gabriel has been added to geni.com Gabriel Stålesen Kvinlaug Birth: August 2, 1841 Fjotland Death: January 10, 1929 (87) Immediate Family:Husband of Ane Thalia Tunheim Added by: Per Åge Serigstad on August 28, 2009
Per Åge Sirigstad is on facebook, maybe you can contact him through that.
he has an email address online, I think he works at the Stavanger Newspaper aftonbladet. email@example.com
Since he posted the Geni genealogy, he might be related somehow. Good luck, Taryn