A quick look at the chronology for his ancestor in his public tree makes it fairly clear that the passenger list entry is not for his ancestor.
That is unless:
- his ancestor went back to her maiden name after her husband died in Michigan.
- his ancestor went back to Sweden after her husband died in Michigan.
- the place of birth he has for his ancestor is wrong (as in over 100 miles apart).
- the ancestor didn't use a patronym from her father's first name, didn't use her father's last name, but chose an apparently different maiden name.