Gormlaith Gaunt's curse

This curse was cast by Gormlaith Gaunt in 1634 when she arrived at Ilvermorny School of Witchcraft and Wizardry.

History
She cast the curse containing Isolt and James's names toward the house which forced them into an enchanted slumber. The enchanted slumber was so deep, it prevented anything from waking them up until the terrified screams of their daughters broke the curse and woke them up.