Who is Mr. Katz , the Father from Tevye the Dairyman and the Railroad Stories and what is their importance?

The Blondish Man is named Ahronchik Katz and is the father of an only son. His wife makes him fight to get his son into High School. Finally the man gets the boy into school, while ruining his business, but then the boy goes out on strike. The man wonders why he ever married.