Ingrid (Once Upon a Time) has all of the powers of her niece Elsa, but has more experience at controlling them.
Jadis, AKA the White Witch (The Chronicles of Narnia) was able to plunge Narnia in a winter that lasted over 100 Narnian years, having only been broken by Aslan's intervention.
Lumi the Snow Queen (Fables), being the embodiment of Winter in her realm, must switch castles with her three sisters in a continuous, yearly cycle or else that section of the world is trapped in winter.
The Casket of Ancient Winters (Marvel) was an Asgardian artifact, which contains the Fimbulwinter of Ymir; it created massive snowstorms if opened. The hand size Casket of Ancient Winter contained the fury of a thousand killing winters.
The Casket of Ancient Winters (Marvel Cinematic Universe) is an artifact from the realm of the Frost Giants and a powerful and deadly weapon.
Queen of Ice (Valkyrie Crusade) trapped her kingdom into an eternal winter.