Henry Cain's will is indexed as bk 1 Episcopal wills (ie wade thru the microfilm in Museum as many books of Episcopal wills in this period appear to have be filed/filmed at ramdom) - the transcribed MI's (note not burials) will have a plan at front of book - again Manx museum - get a copy or note a convenient obvious grave and cross ref to this - check which of two yards it is (Old church at Cronk or new St Mary's nearer main road)