"A Morgan County History" by Ethel Freytag & Glenna Kries Ott, tells of Doctor Gustav Brandau being brought in by the East Tennessee Colonization Company, to care for the new settlers in Wartburg.

Doctor Brandau arrived in America in 1847. Source

Gustav Brandau & Charlotte Roehl were married 1866. Source
Transcribed by Julie Cromwell for the Morgan County Homepage.

I write of Doctor Brandau, not because I have linked him with the family but because in 1850 he lived at the Haag tavern.