1. I would first of all check the details on 'FamilySearch.org' [I.G.I.]
2. look on Lawson's list of births at
www.iomfhs.im/lawsons/LawsonBMD/births_bir_index.html?Submit=Birth+Index
3. and when you're sure about everything contact the IOM General Registry at www.gov.im/registries/general/civilregistry/
if you want to order a Birth Certificate (at a cost)