You should ask me CAUSE I AM SWEDISH.There is actually a smaller town with a similiar name Brattfors in the town FILIPSTAD,sounds like it could be the one?
The other town you refer to is KARLSTAD
Its also called BERGSLAGSBYGDEN its way deep into the VÄRMLÄNDSKA skogarna (forrests).Lots of work in the woods in the old time and mines.Those two amller cities is situated in the same state.
The family name should be JOHANSSON in sweden

Have a look at these two websites with pictures of the towns
Hope it helped you some in your "dective" work

http://www.karlstad.se/

http://www.filipstad.se/

Love Eva