hoffnung - thanks. Helpful post.
yknot - "Further how can you find anything else that 'fits the bill' if you can't fully demonstrate knowledge of what you are trying to compare....."
I'm not sure why I would need to "compare" on 1914, since I am not looking for that as a criterion of Christianity. As I mentioned I did address the origins (which I am reasonably certain you will be versed on anyway) but I'll copy and paste again from my post above...
Regarding how and when - it's clearly speculation built up on some adventist theories in the 19th century. IMO whether it's right or wrong doesn't change God's fundamental purpose to have Christ rule as king until all enemies are put under his feet and all things are reconciled to Him.