Not Entirely Sure
As the title suggests, I'm not entirely sure about this. But there's a lot of people on mum's side of the family who like to move around a lot, and don't like to remain settled in the same spot ... and I have that bug. Kind of odd, considering they're all from farming stock.
Then there's Pippa's (my mum's mum) reaction whenever some suggests there's gypsy blood in the family; she get's hugely offended and defensive, and vigourously denies it. I really can't imagine such a reaction unless there's some truth in those suggestions.