Hej Rolf!
I found this family on the Emibas CD, this CD covers about 75% of those people who were leaving their parish to emigrate to a foreign country. This could be the people you were looking for.
Here are those records:
Post 1022083
Byberg, Per
Arbetare (married man)
b. 4/5/1845 in Borgsjö, Västernorrlands län (Medelpad)
Emigrated 5/22/1891
from Sillre, Borgsjö, Västernorrlands län (Medelpad)
to Brasilien
Source: Household Examination Roll, p. 647
Emibas migration file ID: Borgsjö Y 1891 009
Post 1022084
Jonsdotter, Elisabeth
Hustru (married woman)
b. 1/3/1845 in Borgsjö, Västernorrlands län (Medelpad)
Emigrated 5/22/1891
from Sillre, Borgsjö, Västernorrlands län (Medelpad)
to Brasilien
Source: Household Examination Roll, p. 647
Emibas migration file ID: Borgsjö Y 1891 010
Post 1022085
Byberg, Jonas Emanuel
Arbetarson (unmarried man)
b. 2/2/1873 in Borgsjö, Västernorrlands län (Medelpad)
Emigrated 5/22/1891
from Sillre, Borgsjö, Västernorrlands län (Medelpad)
to Brasilien
Source: Household Examination Roll, p. 647
Emibas migration file ID: Borgsjö Y 1891 011
Post 1022086
Byberg, Märta Kristina
Dotter (unmarried woman)
b. 11/16/1877 in Borgsjö, Västernorrlands län (Medelpad)
Emigrated 5/22/1891
from Sillre, Borgsjö, Västernorrlands län (Medelpad)
to Brasilien
Source: Household Examination Roll, p. 647
Emibas migration file ID: Borgsjö Y 1891 012
Post 1022087
Byberg, Elin Amanda
Arbetardotter (unmarried woman)
b. 12/29/1879 in Borgsjö, Västernorrlands län (Medelpad)
Emigrated 5/22/1891
from Sillre, Borgsjö, Västernorrlands län (Medelpad)
to Brasilien
Source: Household Examination Roll, p. 647
Emibas migration file ID: Borgsjö Y 1891 013
Post 1022088
Byberg, Per Otto
Arbetarson (unmarried man)
b. 7/16/1883 in Borgsjö, Västernorrlands län (Medelpad)
Emigrated 5/22/1891
from Sillre, Borgsjö, Västernorrlands län (Medelpad)
to Brasilien
Source: Household Examination Roll, p. 647
Emibas migration file ID: Borgsjö Y 1891 014
Post 1022089
Byberg, Nydia Elisabeth
Arbetardotter (unmarried woman)
b. 4/10/1886 in Borgsjö, Västernorrlands län (Medelpad)
Emigrated 5/22/1891
from Sillre, Borgsjö, Västernorrlands län (Medelpad)
to Brasilien
Source: Household Examination Roll, p. 647
Emibas migration file ID: Borgsjö Y 1891 015
Have a nice day!
Don