In 19th century the Liverpool Mercury included notices of births, marriages and deaths for events in Lancashire, Cheshire and the Isle of Man which may be particularly useful when trying to find such information before Civil Registration.
There is an ongoing project to transcribe these announcements for web users and, although incomplete, there is a significant set of data on-line already including a fair number of Manx names and residents. The web address is www.old-liverpool.co.uk