Item: When you get married at the chapel at Cornell the building was not designed with a room for her to prepare and wait. The only room separate from the main building is the crypt, which happens to also be the place where the founders are buried. So the legend goes that if the bride gets cold feet, the ghosts of the founders will rise from their graves and escort her down the aisle because any woman should be honored to marry a cornell gentleman.
I first heard this story when I went on a college tour of Cornell, but I asked my friend about it, since she goes there. She liked the story because along with being fun and mystical it makes her school look good, since any woman would be lucky to marry a man who went there.
I think this is an interesting superstition because it is very connected to the liminal aspect of the marriage ritual. The legend is about the time right before the marriage occurs, while everything is still in flux and everything can still go wrong.