His Family Tree on AllMovie

In this comedy drama, a worried Irish father, leaves his Erin pub and heads for middle America to find out why his son has suddenly stopped writing him. He finds his son married to a snobbish uppercrust wife and embroiled in a heated mayoral election. At his wife's suggestion, the young man has changed his last name, and does all he can to hide his Irish heritage. Unfortunately the cat comes out of the bag when his pappy comes to town. Fortunately, once the brouhaha settles down all turns out for the best.