Short answers, pulled from the story.
Aeneas was a Trojan hero, the son of the Trojan prince Anchises and the Greek goddess Aphrodite, whom the Romans called Venus. He is a minor character in Homer's Iliad and receives full treatment in Virgil's Aeneid, where he becomes the first true hero of Rome and an ancestor of Romulus and Remus.
Virgil gives Aeneas the epithet pius, meaning pious, a term connoting reverence toward the gods and dutifulness to family. It is applied when Aeneas prays or acts on behalf of the gods to fulfill his divine mission, distinguishing him from Homer's wily Odysseus, and scholars still debate whether Virgil sometimes uses it sarcastically.
Aeneas had a year-long affair with the Carthaginian queen Dido after reaching Carthage following six years of wandering. When Jupiter sent Mercury to remind Aeneas of his mission, he left in secret, and Dido cursed Carthage to forever oppose Rome before killing herself with the sword he had given her.
After Aeneas died, Venus asked Jupiter to make her son immortal, and he agreed. The river god Numicus cleansed Aeneas of all his mortal parts and Venus anointed him with ambrosia and nectar, and he was recognized as the god Jupiter Indiges.
Aeneas is the progenitor of the Roman people, since Romulus and Remus descend from him through their mother Rhea Silvia. The Julian family, including Julius Caesar and Augustus, traced their lineage through his son Ascanius back to the goddess Venus.
The Brut Chronicle tells of Britain's settling by Brutus of Troy, son of Aeneas, and the legendary British kings including King Arthur traced their family through this grandson. Snorri Sturluson, in the Prose Edda, identifies Aeneas with the Norse god Vidarr of the Aesir.