Olav Grundesson Heggland Grundyson Setesdal, Norwa

I have a new question. When I am recording their names should I be recording the Austad also. I noticed on geni.com that they use the Austad name a lot where I have been using the Grundesson Heggland (Hegland) Grundyson. I know that Heggland and Austad are probably farms and places in Norway. What do you think?