Who was the least known demi-god in Greek mythology?

One of the least known demigods in Greek mythology is Asclepius, the son of Apollo and the mortal princess Coronis. While he is recognized as the god of medicine and healing, his stories are less prominent compared to more famous demigods like Hercules or Perseus. Asclepius's abilities to heal and even bring the dead back to life led to his eventual demise, as he was struck down by Zeus for violating the natural order. Despite his lesser-known status, he played a significant role in ancient medicine and was venerated in healing temples.