Thanks, Jean, for confirming that I had the wrong family in the 1911 census.
At the moment we don't know whether Amy Elizabeth Kelly was born in the IOM or whether she moved there before the birth of her children. Judging by the IOM census records it looks more likely that she was born in Ireland or England.
Hopefully the death certs will throw more light on the family, and if Marion puts the details from those on this board we will be better able to help.
Sue