Thank you RK,
I haven't got other informations about Charles William Mac Farlane, he was captain in the 5th batallion of Warwickshire REgiment during the First World War. He was married with a french lady at Cambrai (France) in december 1919, he have got a son who was born at Cambrai in 1923 and the couple divorced in 1925. I lose his traces. So, it's the only document discover on the web who learn tome he migrate to Canada about 1925.
Arnaud