Hi! I don't know anything else about her. This is a tree I researched for a friend. Petra is her great grandmother. I only found her by working backwards with the census' and marriage record for one of her sons, Charles Edward Olsen. I believe I have found her in 1880, 1900, and 1910 census records.
Thank you for the spelling variations. I am trying to find any immigration records there may be for her.