I have discovered that AF runs (or possibly walks slowly) in one side of my family. I knew there were heart problems on my father's side, but because he wasn't really in touch with his brothers and sisters I knew little more than that. My father had high blood pressure, and my grandfather died of a heart attack... that was all I really knew.
However, I am in touch with a cousin on that side of the family thanks to doing a family tree, so I had a brain wave, explained the situation, and asked him if he knew any more about it. He confirmed there were problems and added that he had AF too! So it is in the family... For some reason this makes me feel better, goodness knows why, because it sounds as if he has had a tough time of it (two failed ablations).
Neither of us know any more about the rest of the family, except that three of my father's siblings died young. Roy is a little older than I am, so I am relying on him to keep ticking over now, to make me feel more optimistic!