A small universe of common given names, plus patronyms instead of family names, plus alternate spellings of all names, produces many similar names living in the same area. In this case, I was disentangling several different Katarinas and their parents, husbands, and children. I thought I had two, but ended up with three (plus a Kerstin mixed up with one).
Katarina Andersdotter Times Two (Three?) – ArvBlog: Heritage