I'm not researching the surname Martin but in a book that I have there is 4 Martin's mentioned but only one from the Labrador area.Here's what it says:
MARTIN,MARTIN (1890-1976).b Nain;Inuit elder;d Nain Sept.
Martin was for many years chief elder of the Inuit community at Nain and frequently served as a lay preacher for the Moravian congregation there. RHC
I hope this helps.Take care.