My grandparents, Joseph and Mary(Jacula) Proskow, lived in Canada 1910-1924. Joseph worked in the mines, including one his brother owned.(Brother may have used the name of Prokop or Prockiw-mine possibly in Moosejaw) Mary and Joseph had a son Paul who died along with many other miners' children of Spanish influenza. Mary lived with her sister Anna Pooke and family after her mother died in childbirth. They lived in Holden. After the child died they moved to Minnesota where Joseph had another brother, Henry Prokop, living. Where did their family's come from? Any help would be appreciated.