Henne families were in Illinois and St. Louis, MO in the late 19th and most of the 20th century. I do not know the meaning or derivation of the surname. Dorothy Henne was the wife of a first cousin of our father. Edward was her father. They are part of our Winge Family Group.
The (-9G) etc. indicates the number of generations before Erven Thoma and his siblings. Bold face names have their own web page.