Kristoffer Trondson RUSTUNG

                   Fra "Strandebarm og Varaldsøy i gamal og ny tid", (Næss/Kolltveit) :" Kristofer Trondson har gjort Rustung-slekti til ei av dei mest namngjetne på 1500-talet. I han var det gamalt norsk vikingto og han synte eit pågangs-mot og ein virketrang som er utan sidestykke hjå den norske adelen på reformasjonstidi.Rustung- eller Seimsætti Ein høyrer fram etter 14. og 15. årh. gjete fleire med namnet Rustung eller Rostung, men om desse har noko med ætti på Seim å gjera er uvisst.  Stamfaren her er Tron

Notes from a talk by Lars Loberg, President og the Norwegian Genalogical Society in which he tries to explain  the areas in Norway where the families lived that have a noble family connection.
"North of Ryfylke is Sunnhordland, second to Østfold the area with the largest number of noble estates. Elsaker, Eriksfjord, Fet, Flateråker, Gjersvik, Halsnøy, Hatteberg, Hovland, Kjerland, Lyse, Malkenes, Mel, Onareim, Sandvik, Seim, Skade, Ske, Tysse, Valvatne, Vatne, Ænes and Ådland are only a selection. And moreover, many of the families of these estates left descendants in the area. Mowat, Rustung or rather Tronds, Dall and Bagge will be in many if not most family trees of this area. Some of the people involved even played significant roles in the Norwegian history like the pirate Kristoffer Trondsen, the Archbishop's man who later became admiral for the Danish King on the condition that he had to live in Copenhagen and not move back to his home in Norway.

Hardanger also hosts several interesting farms like Aga, the ancestral home of the Galtung family. That family still exists in Norway and so do lots of cognatic descendants. Links from the Galtungs back to the people at Torsnes, Sandven and Norheim prove that a numerous nobility at different levels of society has been active in these regions."