Fleur de Lys de Gondelaurier is Phoebus’ fiancee. She is a young noblewoman.
Fleur de Lys means lily and is the symbol of France and part of the royal family heraldry. Lilies denote purity but a theory on her name indicates that it signifies how alike she is is to the rest of her social class. That she is a stereotype, a symbol of the greater populace.
Her surname is Gondelaurier and it doesn’t seem to be a real surname. It can be broken down to Gond meaning “hinge” or Hinge pin” as a in a door and laurier meaning laurel tree. The Laurel tree is her house sigil. One could surmises that the hinge means that she is the door to Phoebus’s social climbing and it “hinges” on her. The laurel imagery also reflects on Phoebus as it has connections to Apollo. Very simply, Apollo fell in love with a nymph named Daphne. Apollo pursued her. She begged her father to help and he turned her into a laurel tree. Apollo took the laurel leaves and made a crown. The connection is that when Fleur de Lys avoids Phoebus, he pursues but only to to get respectability, the crown of laurels.