Hostes in Aeternum

For centuries, Malfoys and Potters have either ignored each other's existence, or been outright enemies due to an everlasting curse. Nobody knows that the curse was put on an ancient family heirloom Harry wants to use for this year's Beltane ritual. When the old magic flares up, the course of history might be altered yet again. H/D, plus some epilogue HPGW. Historical AU