I believe the Gibson family were involved with the Underground Railroad. Illinois had numerous UR stations, including Joliet, where Josiah lived and preached in 1860. In 1870 he's in Marion, Shelby, Illinois. Then in Effingham in 1880.
In 1850 Josiah was living in Columbiana, Ohio, a county that was also involved with the Underground Railroad. His wife Elvira's surname may be Ebbert (as per one of their children's marriage records).
Note: When one of Josiah's sons married he named his father as "Jonah Gibson" which takes us back to the details dalek39 gave at the start of this thread.
Indeed they are a fascinating activist family. They made a real difference in the world.