I found some interesting things about Charles Hubert Petri Sr.'s palace uniform its white and red with knee high black leather boots. He was the Gardes du Corps on guard at the Berlin Palace.
Also I wrote an article for the Austin Genealogical Society Newsletter last month on the Thompsons of Jollyville, Texas. There is a copy of this article on my family tree linked to William Henry Thompson. Or I could email you a PDF copy. My email is firstname.lastname@example.org
Hope to hear from you