Sardus

Sardus, also Sid Addir and Sardus Pater was the eponymous mythological hero of the Nuragic Sardinians. Sardus appears in the writings of various classical authors, like Sallust, Gaius [Julius Solinus|Solinus] and Pausanias.
According to Sallust, Sardus son of Hercules, left Libya along with a great multitude of men and occupied the island of Sardinia, which was so named after him. Later Pausanias confirms the story of Sallust and in the second century CE writes that Sardus was the son of Makeris, and that the island of Sardinia changed its name from Ichnusa to Sardinia in honor of Sardus. Makeris is likely identifiable with Melqart, whom Pausanias and classical authors identified as the "Heracles" of Libyans and Egyptians.