What is "crisus"

In Greek mythology, Crisus or Crissus (Greek Κρῖσος) was a son of Phocus and brother of Panopeus. With Antiphateia, daughter of Naubolus, he became father of Strophius; thus he was the grandfather of Pylades. He is also said to have founded the town of Crissa, which received its name from him.