I have disproved a couple of family legends as part of my research. I can remember my mother telling me that her father-in-law went on the 1936 Jarrow March. A list of the walkers has since been published and his name does not appear on it. As he lived in Jarrow at the time it does seem unlikely that he would have joined the march elsewhere.
My grandmother used to tell me that to get her age you should take one year off the old century and add it on to the new century, meaning that in 1965 she would have been 66 etc. I have since found out that rather than being born in 1899, she was born in 1898, just a (very) few months after her parents were married. This makes me wonder if they lied to her about her age throughout her life.
Further to what I said about political correctness, if family history was a subject at school, I can just imagine there would be so many stories of children with siblings from different fathers, adoptions, temporary fathers, unknown fathers, two fathers, two mothers etc and some people would just totally put a stop to the idea. I know many of these things have happened throughout history, but they have become almost normal these days. I really am amazed at how many different areas my research has touched to.
I do wonder if the concepts of DNA were taught in school whether it might deter potential young villains from a life of crime.
Martin