Patrick 'Grampy' DavisActingNo biography available.Known For4.2The Supernaturals1986Fan ClubNo Nerds have favorited Patrick 'Grampy' Davis yet — be the first.All fan clubsFrom NerdspinFilmographyActor21986The SupernaturalsFilmOld Man (as Patrick Davis)★ 4.21978TaxiTVGramps • 1 episodes★ 7.3