Christina Anderson m. Olaus Nelson

Looking for information about family of Olaus Nelson b.5/10/1845 in Halland, Sweden.He married Christina Anderson(b.3/22/1846 in Lingemo, Sweden)He died sometime in 1923in 1923 in Monrovia, California.She died 8/8/1953 in Monrovia.Yes.She was 107 years old.I believe they lived in Massachusetts for awhile (possibly Gloucester) Story is that some of their sons were killed on a fishing boat.I have information on son Frank Hugo Nelson.Looking for anything about their parents or any other children.