Oh, I LOVE to teach! Norwegian ancestral research is so much fun!
Let me organize my thoughts and respond later today or tomorrow.
Meanwhile - I can point out some Hordaland geography specific to your families there.
An older map of Hordaland that shows parishes/clerical district names and approximate boundaries for those (I don't recall the actual date of this map). Note locations of Kinsarvik, Ullenvang and Odda along the Sørfjorden "dogleg" of the Hardangerfjorden.
You see Odda with a lake on the south side of it. Sandven farm is located on the southern shore of that lake. Jordal is at the northwest side of that lake. Bru and Seljestad are further south - not far south of what looks to be labelled Solfonn and probably closer to Roldal parish/district than actually to Odda.http://www.rootsweb.ancestry.com/~norway/hordaland.html