And sometimes a story is deliberately fabricated, to throw people off the scent.
Take the story, for instance, that the King-Spooner surname came about because a Mrs Spooner, after being widowed, remarried a Mr King, and the children were unfortunately named King-Spooner.
I have relatives who have had this story handed down to them through the family, and it has thrown their researches completely off course, because it is pure fabrication. In this case, it appears that it was fabricated to cover up a potentially bigamous marriage.
Happy to share my researches on this point with any other King-Spooner descendants by private message on this site. Not everyone is persuaded by what I have got, but the documentation all seems to point in the same direction to me.