I know there is a book on the Wiberg Lines. Some women in Sweden sent information to a cousin of mine in CO. She sent it on to me. I have an e-mail address for her that was on the papers. I e-mail her but she did not answer me last year. I will try and get the information out and send it on to you this weekend if you want. There is a Swedish sit called SARA do you have it? As for the question if there are many Wibergs I take it there is some but not like Jonson, and all those with dotta endings. Do you know his mothers name. Maybe he took that. You know how they switch the names around in Sweeden. I have also found Wyberg, Yiberg,and ect. I have the Wiberg's back to I tink 1600, but the name keeps changing as it go back. Once the Wiberg name came in on our line it seems it stayed Wiberg and that started in Sweeden. I guess unless the women married. I know when my grandmother and aunts came here and married they took the American husbands names. Where are you from?