if there was a grave marker extant in 1970's then it would be recorded in Memorial Inscriptions for Braddan pub by IoM FHS which gives a plot ref (the map is also displayed inside old Kk Braddan - the ref was their own, until the new yard which had specific plots there was no sexton and families generally buried their dead in within a plot used by the extended family ) - if no grave marker then the burial plot will almost certainly have been re-used as until the yard was finally closed it was full to overflowing