I've found that now I've been a researching my husbands tree and assisting my brother research ours that if you are dealing with more recent family members a bit of tact may be needed. I did a bit of research for my mother in law and found that her fathers sister was his half sister and he only arrived a month after her grandparents marriage. Her great grandmother ended up in an asylum. Happily she didn't find it too distressing but I can't bring myself to tell one of my husbands aunts that one of the family was she was convinced was married was never married. On my side of the family I have 3 family members who were drunken violent thieving convicts. On the plus side I have found a prominent Chartist who was against violence and a sailor in the battle of trafalgar.