Hector was the great Trojan hero who was the son of Priam and Hecabe and the husband of Andromache. His name derives from echo, 'to hold fast', 'uphold', 'defend', since he was the Trojan war leader, the 'prop of Troy'.
It is interesting that the name of his little son Astyanax has a similar meaning, reflecting his father's great powers of resistance. The English verb 'to hector' meaning to bully or bluster (or both) derives from his name, since this is how Hector was represented in medieval romances.