Henry is a half brother to Anna Marie's other five children. His father is unknown, but it has been proven for sure that Eberhard Heinrich Brueggeman is not his biological father. Henry George was born 10 months after Eberhard Heinrich died serving in the Civil War. He is not listed as a son of Eberhard Heinrich on Ann Marie's widow's pension application. Family Tree DNA testing was done to compare the Y-DNA of a direct-line male descendant of John William and of Henry George. The Y-DNA did not match, but there was a match for the maternal DNA, proving Anna Marie was a direct line maternal match.
Siblings names and birth dates were found in Auglaize Co. Ohio Early Births Publication (before probate records)1830's-1869; published by the Auglaize Co. Chapter of the Ohio Genealogical Society 1994; page 26. Henry George's records just lists a mother -- "Widow" Brueggeman.
Eberhard Heinrich's memorial #96897108 is linked to the other five children.