In the episode Two Journeys, we are first introduced to a young Marcellus who stands beside his mother with his older brother William and younger sister Celsa. His Father, in Old Norse introduces him and his family to their two older cousins Bjorn and Hvitserk and the other Viking's before one of the nannies takes him and his siblings away.
In the episode The Great Army, Marcellus can be seen stood with his younger sister Celsa as his older brother William and his father Rollo enter the palace. Marcellus and his siblings are taken away by the nanny as his parents are left to talk.
Marcellus in Latin means "Young Warrior".
|Season four appearances|
|A Good Treason||Kill the Queen||Mercy||Yol||Promised|
|What Might Have Been||The Profit and the Loss||Portage||Death All 'Round||The Last Ship|
|The Outsider||The Vision||Two Journeys||In the Uncertain Hour Before the Morning||All His Angels|
|Crossings||The Great Army||Revenge||On the Eve||The Reckoning|