Hi Col,

I don't think there is any way around having to look at a copy of the original burial entry in the Museum library, or on LDS film (see local phone book for Church of Jesus Christ of Latter-Day Saints). You used to be able to buy parish register copies from the Registry to be posted to you (www.gov.im/registries/general/civilregistry/) but that might have changed since the imuseum opened.
You could try emailing the Museum library to ask whether you can buy a copy: enquiries @ mnh.gov.im [close gaps].

Sue