Earlier quoted context omitted.
That link suggests "the beginning of the end" is from Shakespeare - do you know which work? I only know it from Churchill, and assumed it was his.
I am still searching. http://www.hull.ac.uk/php/cetag/1dshakes.htm confirms "the beginnig of the end" but does not give a source.
http://www.google.com/search?hl=en&q=site%3Ashakespeare....
http://shakespeare.mit.edu/midsummer/midsummer.5.1.html#spee...
"That is the true beginning of our end."
Actually it seems like Shakespeare may be doing a bit of wordplay here, "end" looks like it primarily means "goal" as in "the ends justify the means."