This is a narrative report of an excellent example of secondary personality (Person Three) in a British ex-soldier of the World War. The change is attributed to a severe physical trauma sustained prior to 1915 from which date onward a fairly constant retrograde amnesia existed until he was found in a confused state in California in December, 1929. Certain intermediary states between Persons One and Three are recorded, and during the entire period of Personality Three the patient had a vague consciousness of the existence of his lost identity. This feeling may account for his constant wanderings and possibly fugues as Person Three. The only psycho-analytic point of interest in the account is the fact that when the