please help at a brick wall for several years

1880 CENSES SHOW gg GRANDFATHER BORN IN NY HIS FATHER BORN VT

NO NAME FOR HIS FATHER B VT ??? or mother HOW DO I find out? and where they came from to AMERICA
HAYDEN, EDWARD D. B 1843 NY/ WIFE Retta L Fitch d/o Hudson Fitch & Abagail Wilson
Hayden,Claude Deforest B 1883 OH/ wife Katie M Mayfield d/o Grandville Mayfield & Clarissa Hutchinson (2) Nellie Stoll
Hayden,Dennis Deforest B 1907 NE wIFE Thea V Briggs d/o Charles Briggs & Opal Hull