I have had one woman bring to my attention the actual death date for the brother of my great-Grandfather, but at the time I didn't take any attention to it as I had been told he died in England and not Canada. It wasn't till I found some ships passenger documents with his name, and the name of his father, that I paid attention. Finding this out took me onto the name of his wife and his eventual death date and location.
I don't mind seeing others making mistakes, but I suppose I would if it involved direct ancestors that simply aren't correct. It is humorous to see others putting down Holcombe in America rather than Holcombe in Somerset, England, but it does get frightening when you see the amount of people who simply copy every bit of information they find on others trees, so you get ten or 20 people ALL stating this person died in Holcombe, America and not in England.
Actually, whilst on the subject of informing others about their ancestors, I have been reading a lot books regarding Bristol's more dark history and have contacted others to inform them that their ancestors are mentioned in these books, but they never reply. I put links to articles on death records instead, so others in the future can find them and appreciate the knowledge.
Some research was done which found that about 1 in 20 of the fathers stated on birth certificates wasn't actually the real father. This means that the further you go back in time there will be an ever increasing number of people on your tree who are not biologically related to you, even if you have got the correct "theoretical" line. The only lines you can really be certain of are your paternal and maternal lines which can be verified by DNA.
Have you a link to this research? It does sound interesting. Luckily on my paternal side, the resemblance of us Clark's in photos goes right through, so paternity is definitely assured that way
