Hi Sandra, I think you may have some individuals mixed up. You mention Abraham as the possible second son of Matsson-726. You then indicated that Abraham may have been born in 1830, but that would mean he could not be Matsson-726's son, as William Mattson was born in 1876 according to the linked profile.
Also, you mentioned Finland, but William Mattson was born and lived in Wisconsin according to all of the profile information, and his parents were born in Norway. Where does Finland come into the picture?
If you can help clarify the people involved, and more specifically what it is you are looking for, then I will be happy to take another look.