We all have family traditions. Some are colorful, some are entertaining; some are exaggerations, and some are bold-faced lies. All can be used genealogically, whether for actual clues or just to provide "colorful" stories to add to the family history.
Most traditions are not completely false and contain a buried grain of truth. Finding that grain of truth and determining the difference between truth and fiction is not a simple matter.
The rest can be read in our "Analyze the Tradition" which was posted to our site some time ago in the pre-blog era.