This name occurs during my investigations especially in East Prussia, but in one case it changed to Seeberger in the course of one generation. But this did not happen in all cases.
All of the informations sent to me up to now
point to the fact that the origin can be found somewhere in the area of the Baltic sea. Also West Prussia must be considered. It is possible that the Seeberg and Seaberg from Sweden and Denmark could have the same origin.
this case I just need more material in order to prove any connections. Please send me your details, I will also deal with this name.