How did the expression OK get started?

Appears to be some varied opinions on this one..........

http://www.askoxford.com/asktheexperts/faq/aboutwordorigins/ok

Which seems more likely? That a club named for the nickname of a losing politician, or for the failing politician himself, = fine and dandy, great!, all right etc ( Don't Americans forget losing candidates the day after the loss; why remember this then of one?)
or that some joker wrote Orl Korrect a year or two before ( in the 1830s; this is 1840) and van Buren's team seized upon a happy coincidence; that everything would be 'OK' with 'O.K.' and also named the club for that association with well being ? So so far from inventing that use he applied it, knowing it was a popular expression of the moment, and which would make his campaign just that bit more memorable, as a catch phrase might now.

The answer seems to give a good reason to support the Orl Korrect theory, as the Oxford Dictionary does.

Great answer and thats correct thank you!