Where do we start?

The only text written about Sean is in ancient books.

It is written that his father was a notorious dwarfen warrior and his mother a Viking Shieldmaiden descended from the gods. It is also written that Sean was born on the battlefield when his mother (who was heavily pregnant at the time) slew the mighty dragon Oulah, and as the dragon took his last breath, Sean took his first.

However, it has also been written that Sean wrote the ancient books in the first place!