The following data is extracted from A History of the Pioneer Families of Missouri - Montgomery County.
Peter Rockafellow, and old revolutionary soldier, was of German descent. He married the widow McGlathan, and settled in Montgomery County, Missouri, in 1822. (He lived a short time in St. Louis County, when he first came to Missouri.) He had but one child, Anna, who married Andrew Hunter.
Source: A History of the Pioneer Families of Missouri - Montgomery County