Hi Reid,
The earliest cruck that I have been inside (this winter) is less than 20 miles north of me in guess where - [Olde] Berkshire. This has now been dendro dated to 1299 and is hence a very early example with cruck blades of staggering size and the best thing is that folks still live in it - 712 years of family service !!!
Good luck with the Ontario raising. Some digi pics would be nice.
Regards
Ken Hume