have a look at www.manxnotebook.com/famhist/genealgy/church.htm
Rushen reg starts 1712, Lezayre 1696 - only Malew is in your time window (most other parishes are also out of your window so you can never be certain) - it is rare to find a birth year mentioned other than in the registers; age at death is raely given, even in court cases ages are generally rounded though minimum ages can sometimes be derived from wills