In Greek mythology, Celusa or Kelousa (Ancient Greek: ÃÂ÷ûÿῦÃÂñý or ÃÂ÷ûÿÃÂÃÂֈKelousê from kêloô âÂÂto have an abnormal deliveryâÂÂ) was probably a naiad or an oread who personified over Mount Celusa or Celossa in Phliasia. She born the river-god Asopus to Poseidon. Otherwise, Celusa might be the same with Pero, the so called mother of the river-deity by the marine god.