Astraios is the Greek Titan of the Stars, Planets, and of the Dusk (the time when the stars become visible).
His parents are Crius, a Titan connected to the constellation and the one who measures years (who was banished into Tartarus after the war between Gods and Titans), and Eurybia, a minor sea female Titan. He then married Eos, female Titan of the Dawn. Together they had many children including the Anemoi (Four Gods of the Winds and Cardinal Directions), Phosphorus God of the Morning Star (now known as Venus), Hesperus God of the Evening Star (also Venus) and the Gods of the Wandering Stars: Phainon (God of the planet now called Saturn), Phaethon (God of the planet now called Jupiter), Pyroeis God of the Midnight Star (now known as Mars), and Stilbon (God of the planet now called Mercury). Sometimes Astrea, the Goddess of Innocence and Purity, is also included as their children because she is connected to the constellation Virgo.
Astraios also has two brothers. Pallas is the Titan of War and husband of the Goddess Styx. Their children are Zelus (Glory), Nike (Victory), Kratos (Power), and Bia (Force). Astraios’s second brother is Perses, Titan of Destruction. His wife is Asteria, Goddess of Nocturnal Oracles and Falling Stars. Their child was Hectate a great Goddess of Crossroads and Sorcery.
Anyways, I could not find a specific story, but here is the family connections. I hope you enjoyed!