Star Spangled Banner and Beuhring

I constantly tell myself that I am going to do the research to know if my 3-gr-grandfather, FGL Beuhring was present at the battle after which the Star Spangled Banner was written.  Today's Travel Trivia suggested that Baltimore is one of the 10.  So below is a screen shot of their comment.  This is definitely on my top 10 list of places in the US that I would like to visit.  AFTER I do the research.  I think that it is possible that Melba has already done this research and that the answer is in her book.