Arthur Wallace (possibly Williams) in Marrakech 1939

[Kevin, now in Chester]

Does anybody recognise this Arthur Wallace (just possibly Williams) who visited Marrakech, then in the Protectorate of French Morocco in 1939?  He gave this signed and inscribed photograph to a couple he met on his travels and we are trying to find out who he was.

[Kevin, now in Chester]

Research elsewhere may suggest that this is indeed Arthur Williams (not Wallace). 
An Arthur Williams, born in Toronto, Canada on or about 1 September 1900, was killed in action in French Morocco on 10 November 1942, while serving with the Foreign Legion (Unit 2e, régiment étranger d'infanterie (2e REI)).
This Arthur Williams is buried in French Military Cemetery at Marrakech (Plot H row 15 grave number 327).
Can anybody connect these details with the gentleman in the photograph?  And does anyone know more about this fallen hero (see photograph of the grave).

[Milliepede]

He looks an older gentleman in the photo than 39 but could be because he is squinting his face up. 

[Kevin, now in Chester]

Thank you for taking time to reply.  If they are one and the same person, they may have been serving with the Foreign Legion for at least 15 years, so that might have aged them!