Cannonball Guy, very valuable and interesting clue in the 1890 and later note. All U.S. Officers (to the best of my research, although Robert E. Lee, Jefferson Davis, Sam Houston, and another notable who would become a U.S. President walked these very grounds as well). Being after this date and being naval in design, I think I have now nailed it down. A very notable Admiral's wife. Its gotta be hers..