 This has led to speculation among scholars that originally there were only two Kekropidai and that Herse was a later addition to the myth, functioning essentially as a double of Pandrosos.The purpose of the creation of the character of Herse would have been to bring the number of Kekropidai up to three so as to conform to the common trope of three sisters in Greek mythology (in keeping with the Three Fates, the Three Charites, etc.