Complex sentence: Theodora and her sister Eivinda emigrated with him, living first in Sacred Heart, MN from 1887--1888 before settling in Franklin, MN for over a decade, subsequently living in several towns throughout southern Minnesota and northern Iowa.
Split into simpler sentences: Theodora and her sister Eivinda emigrated with him, living first in Sacred Heart, MN from 1887--1888 before settling in Franklin, MN for over a decade. Subsequently they lived in several towns throughout southern Minnesota and northern Iowa.