Endon is one of the two sons of King Lief and Queen Jasmine. He and his twin brother, Jarred, are the princes of Deltora. He is also one of the younger brothers of Anna. Jarred is named after his grandfather.
Jarred and Endon were born a few years after Anna. Endon was named after his paternal grandfather, the late King Endon. Likewise, Jarred was named after Doom, Endon's best friend and Jasmine's father. Doom often visits the palace to watch the young Jarred and Endon play, as it reminds him of his youth in the palace.