A gallowglass was a type of warrior in Ireland and Scotland a long time ago. They were really big and strong and they would help important people like kings and lords to protect their land and fight against enemies.
Gallowglasses weren't just regular soldiers, they were like special forces. Their job was really dangerous and required a lot of skill. They had to be trained in fighting with different weapons like swords and axes, and they were very good at using them.
They were hired to protect important people and their land because they were really loyal and brave. They were like big bodyguards who could fight off armies of enemies if they had to.
So if you think of a gallowglass, think of a big, tough, brave warrior who was hired to protect important people and their land. They were a bit like superheroes in the olden days!