The first is the marriage record (entry # 21) of Brita Stina's parents (Anders Anderson and Brita Olsdotter) in which Olof Olsson is mentioned in Gillberga. I believe the Olof Olsson referenced here is Brita Olsdotter's brother?is confirmed in the very end of the marriage record. It says "Närv. Olof Olsson i Gillberga Brud. Broder." Olof Olsson is the bride's brother.