Princess Zelda I

Princess Zelda I (aka First Generaiton Zelda, aka Another Zelda aka Sleeping Princess) was a princess near the beginning of the Link's Defeat and Daventry's decline timeline split. The name originates from Hyrule Historia. The "I" comes from the fact in the original Japanese manual for LOZ2, the 'another Zelda' in the manual was referred to as the "First Generation" Zelda.

Background
At some point during the Gold Era many years after events of OOT, the Great King (Old King) of Hyrule chose to split the Triforce into three parts shortly before he died, and hid the Triforce of Courage, to keep it out of the hands his own son and evil influence.

Following the king’s death, and with no crest appearing upon the hand of the prince, the power of the Triforce he had inherited as the new king was incomplete. The king was advised by his closest confidant, a wizard, that Princess Zelda seemed to know what was behind these events. Despite being interrogated by the wizard and her brother the king, Princess Zelda confessed nothing. The wizard lost his temper and threatened to use his magic to cast a spell that would cause the princess to sleep for all eternity, but she stubbornly refused to talk. Once the wizard had finished casting his spell, Princess Zelda crumpled where she stood.

Mad with grief and regretting what he had done, the young king placed his sleeping sister, Princess Zelda, on an altar in the North Castle, in the hopes that she would someday be revived. To ensure this tragedy would never be forgotten, a custom was established that decreed that every girl born into Hyrule's royal family would be given the name of “Zelda.” The story became the legend of the first Princess Zelda. The king reformed his ways and governed the land to the best of his ability, but the kingdom continued to fall into decline.

Though the land of Hyrule had seen other princesses bearing the name of Zelda, it was Princess Zelda I who inspired the custom of calling every princess by that name. In the eras that follow her tragic fate, the royal family never fail to name their daughters Zelda