You are rigth ,Brian.
These are estate transactions. The last one is between Arild Heier Olsen and Margareth Aslaug Heier dated 11.Th November 2010. When I see the second name to Arild, he may be a son of Margareth Heier.
Anyway, we are dealing with one estate. Dalefjerdingen 511 is the adress. Gnr 67.Br.nr 6, is the estate nr.
This estate seem to have been parcelled out of Gnr.67.Br 1. which seem to be the main farm. So there have to bee some more info concerning the estate transaction from Dalefjerdingen Gnr 67 br.nr 1. But it doesn`t seem that this info is available in Akershus yet.
http://www.arkivverket.no/URN:tl_read?idx_primreg=PREG&i...In norwegian estate is _eiendom_.
The estate is situated in Enebakk community (kommune), Akershus County (Fylke)
http://www.norgeskart.no/adaptive2/default.aspx?gui=1&la...Geir