Thank you very very much for helping me out.
I have a subscription in Sweden, Ancestry.se, world de luxe. I know that Maja Stina, also Maria Christina in some records, gave birth to my grandmother´s father, Anders Johan. She was unmarried so it´s likely that she had an other child as well. I spoke to my aunt and she maybe think that could have been the case. I also know that my father´s uncle Emil Anders Andersson came to America in 1906, 16 years of age. He was unmarried and single all his life, that we know of. He lived in Iowa and worked as a "farmboy" after he fought in WW1. I know that he vistited his uncle Castenson. I also know that Maja Stina´s sister Mathilda Carlson/Nelson came to America 1885. Mathilda and her husband lived in Moline, Illinois.
Thank you so much again.