Unfortunately, I am not familiar with HISTORY OF HENRY COUNTY, VIRGINIA.
My understanding is that Hans Jacob Koger and some of his brothers and a sister settled in the Virginia-Pennsylvania area.
One of the Koger brothers, Joseph, decided to settle in South Carolina.He arrived in the 1730's and eventually settled in what is now Colleton County, SC.Joseph Koger who settled in SC is my 5X great grandfather.
He had a son Capt Joseph Kogerwho served on the patriot side during the American Revolution.This is my 4X great grandfather.Capt Koger's daughter Mary, married Benjamin Risher, Jr - they are my 3X great grandparents.Benjamin Risher, Jr passed away in Oct 1810 due to a fall from a horse.He was survived by Mary and three sons:Benjamin Risher III, Joseph Koger Risher, and Francis Fontaine Risher.Joseph Koger Risher is my 2X great grandfather.
Capt Joseph Koger had a son Joseph Koger who sold the Koger House in 1838 before heading to Mississippi.Generally, I refer to them as Joseph Koger I, Joseph Koger II, and Joseph Koger III.Some documents show the first Joseph Koger as Joseph Koger, Sr, and Captain Joseph Koger as Joseph Koger, Jr.Around 1800, Capt Koger is shown as Joseph Koger, Sr. and his son as Joseph Koger Jr.
The South Carolina Department of Archieves has created a web site that has its Digiatal Collections which makes it easier and faster to find documents before going to Columbia, SC.This is theironline index.
Joseph Koger, Jr, who became Captain Joseph Koger, would have been 12 years old in 1761.
As mentioned Joseph Koger III, sold the Koger House in 1838.At the time the Koger House was in Colleton District, SC.In 1868, the districts became counties.In 1897, the part of Colleton County where the old house is located, became Dorchester County. (The house is beside the north bound lanes of I 95.)
To the best of my knowledge, Hans Jacob Koger and Joseph Koger I were brothers so Jacob would be my 5X great uncle.