Rǫgnvaldr's Sons refers to the descendants of Rǫgnvaldr, a notable figure in Norse history. They were part of the Viking Age and played significant roles in the politics and warfare of the time, particularly in Scandinavia and the British Isles. Their lineage is often associated with various noble families and claims to power. The most famous of Rǫgnvaldr's Sons is Rǫgnvaldr Kali, who was known for his military exploits and leadership. The legacy of Rǫgnvaldr's Sons is reflected in various sagas and historical texts, highlighting their influence on the culture and history of the Norse world.