Perseus met Atlas on his route, and turned him to stone to relieve his burden.
Perseus found Andromeda, who was chained to a rock by Poseidon.
He slew the monster, and asked her hand in marriage.
When he returned home, he turned Polydectes to stone
Perseus was participating in olympic games when his discus killed his grandfather, fulfilling the oracle.
Medusa
Julianne Garnett
With all these tools, Perseus made for the Gorgon's cave.
Inside, he found the three gorgons sleeping.
While only looking at Medusa's reflection in the shield, he safely cut off her head.
From her neck sprang Pegasus and the giant Chrysaor.
The Quest
He wandered the island for a few days before the gods came to him.
Athena told him to find the Graeae to ask them where the Hesperides were
When he found the Hesperides, they gave him a knapsack with an adamantine sword, Hades' helm of darkness, Hermes flying sandles, and a polished shield.
Youth
Perseus was raised by Dictys
Polydectes wanted to marry his mother, but she refused him
Polydectes knew he could not marry Danaë while Perseus was there
Polydectes pretended to marry another, and requested a team of horses from everyone invited
Perseus had no horses, so Polydectes requested the head of medusa
Beginnings
Acrisius, king of Argos, was told by the oracle at Delphi his grandson would kill him
the king locked his daughter, Danaë, in a bronze court yard
Zeus came to her in a shower of gold and impregnated her
Acrisius cast them into a chest into the sea
Danaë prayed to the gods and they were found by Dictys, the brother of King Polydectes of Serifos.
Origin of Name
name could be pre-greek or proto indo-european
If greek, name means destroyer of cities
could be related go goddess of death, Persephone
could be a Persian name, like Perses, but unlikely