Marie D. RICK's 1911 baptism record notes that one of her sponsors was "Augustus N. Rick," but there is no known RICK male by that name. I think we've got a pretty darn good handle on our RICKs in St. Louis (and back in Baden), so this baptism record stands out.
I believe that this may be a reference to Marie's grandfather, who is known as August RICK (Sr.). August was baptized simply as August RICK in 1830, so either Marie's baptism record contains an error or August did indeed have an unknown middle name. Nickolaus?