The most awkward was when doing a family tree just after a death.
The family were the Smith family. However, the son of Mrs Smith who died said he always found it funny that he never had any Smith grandparents. So did his siblings. They then began to wonder if their father was adopted or if maybe something was amiss somewhere. A couple of us were good at family tree stuff so were asked to search.
We then discovered that Mrs Smith had got married to Frank Smith and had the eldest two sons. Frank Smith then went to prison when she was pregnant with the second and when he got out he fucked off to America leaving her alone.
She then met a man called Peter Francis Jones. She got pregnant, but she couldn’t marry him because her runaway husband couldn’t be found for her to divorce him. It was a time when being unwed and pregnant was a problem.
So they moved 250 miles away, he became known as Franky Smith and the baby she was carrying (and the four subsequent ones) was registered as a child of her original marriage. The lived as if they were married for over 50 years. And that’s why the Smith children never had Smith grandparents.
luckily the two eldest children just felt lucky that their Dad had chosen to be their Dad, rather than robbed of their father. They were all upset at discovering they were half siblings instead of full siblings.
No-one was ever able to discover what happened to the original mr smith. He seemed to get off the boat in New York and vanish.