the microFILMs are a copy of the transcription of the parish register made c 1911 by the IoM Rolls Office - they give ALL information that is in the parish reg - pre c.1840 (dates vary according to parish) for bapts you will get father's name + for most parishes full mother's name post 1760 (not Onchan) ; for marriages the names of both parties and their existing marital status (single widowed) + usually if they are under 21 - post 1840 you will get more info for both inc parents name.