When Athos sees his wife Milady DeWinter, just as the Musketeers intercept the ship at Calais, he says "Sabine" (her first name?) and she says "Athos"- only problem is, Athos was not his real name, but a pseudonym given to him by the king to hide his identity (ditto the other musketeers.) Since he became a musketeer after leaving Sabine, and she has not seen him since, there is no way she would have called him Athos! (His real name was Le Comte de la Fere.)