My stepfather, Eugene McBride decends through Amity Aldrich.I can talk about hand tremors, though, because I've inherited through my mothers family.
Besides Parkinson's, there is a family of hand tremors that are called Primary Intention tremors, which are in the movement disorder category. They aren't the same thing as Parkinsonism.Ours mainly affect our hands, and it worsens with age, but that generally is all the further it has gone. I've followed it through my grandmother, my mother, myself, and now one of my sons is showing it. It is controlled somewhat by medication.