Daughters of Olof Olsson & Karolina Andersdotter-Grythyttan

[Peg]

I found possibly three of my great-grandmother's sisters in the emigration records from Örebro Stadsarkiv. Is there a way to find record of their marriages?
 
Brita Catrina Olsson, born on April 18, 1849, in Grythyttan, Sweden.  Britta Katrina Olsdotter born April 18, 1849 is listed in the emigration records from Örebro Stadsarkiv in Sweden.  This record lists her birthplace as Karlskoga.
She left from Vätsjötorp, Karlskoga parish on March 9, 1883 at age 34. With her was her husband , Gustaf Eriksson , born February 14, 1847 in Karlskoga.
Anna Stina Olsson, born on February 6, 1841, in Grythyttan, Sweden.   She left from Källmo, Karlskoga parish on June 18, 1909.   She was 68 years old and a widow at the time. May have married  Olof Jansson Pulls, born 2 Apr 1847 in Grythyttan.
Lovisa Olsson, born on September 24, 1847, in Grythyttan, Sweden.  Lovisa Andersdotter, the wife of Per Gustaf Jansson Pulls,(my great-grandfather's brother) was also born on September 24, 1847 in Grythyttan. I am wondering if they are the same person.
How could I check these out?
Thanks!  Peg