I take responsibility for starting this.
It happened on /b/ in the summer of 2005. Motoko = Lincoln was a meme at the time, and soon Lina = Washington came along. So I made a blank chart, and the idea was popular enough to create about 2 or so threads deliberating on who should be whom, and my editing them into the chart.
Good times, but I think I killed those two original memes in the process.