I'm replying to you directly by email, but will post a little here too. Yes, Anton was his brother, second youngest of the 5 children of Wenzel and Barbara Seffel. I have Anton's dates as B. Nov 1841 (probably Reichenberg, Bohemia, Austria) D. Oct 7, 1911 (San Antonio). In the Civil War, he served with the First Texas Cavalry Regiment (Union), Companies G and C, and rose to First Sergeant of the company. I think he worked at the Army post in San Antonio for a while after the War. His brother Edward was also in the same company. He was indeed a police officer in San Antonio, and is listed as such in a 1893 directory. I have a great deal more on him and his family (he and Annie had 6 children), but will get it to you via email.