I just saw the first one recently on some thread ...but the 2nd one was an eBay photo posted on the Maria board. AP member ,Nicolá De Valerón, identified the man behind TN as , Senior Lieutenant, Nicholay Dmitrievich Demenkov . The photo was taken at Tsarskoe Selo lazaret. 1916. herer it is in full

No wonder Marie signed letters " Mrs. Demenkov" ...he's was amazingly good looking! lol!