Jaminoreniakal Tyler-Lungbarrow

Jaminoreniakal Tyler-Lungbarrow, who chose to use the title the Oracle, is the fourth biological child of both the Doctor and Rose Tyler-Lungbarrow.

First Incarnation
Jamie and his twin sister Nyx were born a few months after Clara Oswald began traveling with the Tyler-Lungbarrow family. While he was deemed to young to be on adventures, they would drop him of with Martha and Mickey Smith. By the time he was old enough to join in on the travels, Lilith and Jenny had already gone off on their own.

Clara Era
Jamie joined in on all of the adventures Clara had with the family.

Post-Clara Era
He continued to travel with his parents and siblings, save Jenny and Lilith, after the Doctor lost his memories of Clara.