Jason "Jase" Garrett was a male of Betazoid and Human heritage, the son of Rachel Garrett and Ven Kaldarren. He was born in 2324. He was raised on Betazed, primarily by his father, while his mother served as a Starfleet officer, on the USS Carthage and then as captain of the USS Enterprise-C. His parents divorced in 2333, when he was nine. Garrett showed a strong interest in and talent for art as a youth.
In 2336, Garrett and his father traveled to a planet near Cardassian space for an alleged xenoarchaeological mission. During the trip, Garrett befriended an adolescent Naxeran named Pahl, and together, they discovered a burial site known by the original inhabitants as the Well of Souls. Tragically, Garrett's father was killed after being attacked by the dithparu confined there.
Jason Garrett was rescued by his mother. Although the boy wished to remain with his mother on the Enterprise, she thought that he would be better off with his paternal grandmother Molaranna Kaldarren on Betazed. (ST - The Lost Era novel: Well of Souls)