I keep running across this problem, at least it is for me.
As an example the most recent ancestor I am working on.
In the birth records for his children, he is listed as Svend Østenbye in one, Svend Karlstad in another. I assume these are farm names. I am glad his wife's name does not change or I would probably never find them.
Anyway what is your opinion as to how to list Svend in my genealogy program...presently I am just listing the farm names separate, and using the patronymic name to list the person. I do the same with the child, listing them as Svendsen-dttr with the farm name listed under a seperate field.
Would love to hear how others do this