I don’t know know about being Rusyn. According to American census records his “mother tongue” was Slovak and depending on the year was born in Austria-Hungary or Czechoslovakia. I do know that his mother’s name was Anna Kolezsar Estók.

I read that there is town in Hungary called Pilis and many Slovaks live there. So I wonder if an ancestor lived there and moved and picked up the surname Pilisi. Or perhaps they moved from a town called Ples in Slovakia. As it used to be spelled Pilis also back in the 1800s. So for now I am stuck on the origin of Pilisi surname.