Is it possible that Herbert was Canadian?
I haven't checked this information out having just found it.
Returning to Canada on the Minnedosa from the Canadian Discharge Depot in Buxton, Derbyshire, England. Amoung the many soldiers is a:
Pte. Herbert Dexter Number 654029 Batt. CFC Orig. Unit 117 Co. Cat. B2 Group 7
Religion Methodist, Residence Blyth Next of Kin: Wife.
Date: May 20, 1919
Blyth is apparently in Southern Ontario.
OR .... possible AND
Empress of France
Quebec to Liverpool
September 10, 1921
Herbert Dexter age 45 Country of Last Permanent Residence: England
Proposed Residence in England: 14 Pullman Road, Nottingham
Occupation: Lace Business
No Nationality given.
Hope this helps. I will keep looking.
dollylee