Hi David,
I'm pleased that you've joined the site after our little chat and as your just new to this, there's a possibility that there's one or two abbreviations that you're not familiar with. If there is, then let us know, including if there's any information thats been given out so far is correct. Basically, the more information you can give us, then the bigger the chance of getting a result.
I did remember you saying that the surname seemed to change between Crennell and Crinnell and that you also mentioned other surnames and certificates etc, but you'll probably want to confirm the ones you've got first.
Good hunting David and please keep us updated with your research