Osbert in The Last Kingdom is the third, youngest son of Uhtred of Bebbanburg (played by Alexander Dreymon). His name is of great significance in Anglo-Saxon England in the world of The Last Kingdom.

In the final episode of "The Last Kingdom," audiences get to meet Uhtred of Bebbanburg's three children: Uhtred, Stiorra, and finally, Osbert.

Osbert is Gisela and Uhtred’s youngest child, and Lord Uhtred’s third son (his first with Saxon wife Mildrith died as an infant, and Brida’s pregnancy by Uhtred was sadly miscarried).

OSBERT was introduced in the final few minutes of the final season of The Last Kingdom. Who are his parents?