La Déesse Coccinelle

Ladybug (3000 BC) was an Egyptian woman with the secet identity of Ladybug somewhere around 3000 BC. She stopped a pharaoh--with possible help from the Cat Noir of the time from sacrificing an innocent woman in order to resurrect his deceased wife. An image of her appears in a hieroglyph on a papyrus in the Lourve.

About 5,000 years later, Marinette learns of her existence and the long lineage of Ladybugs with Tikki's assistance while preventing the same event that the previous Ladybug dealt with, the akuma-created Pharaoh trying to sacrifice Alya.