The Ynglinga saga is a historical narrative that forms part of the larger work known as the Heimskringla, written by the Icelandic historian Snorri Sturluson in the 13th century. It recounts the legendary history of the Yngling dynasty, which is said to have originated from the god Freyr and the Swedish royal family. The saga provides insights into the early kings of Sweden and their connections to Norse mythology. In the Ynglinga saga, the story begins with the arrival of the Ynglings in Scandinavia and their establishment of power. The saga details the lives and reigns of several kings, their battles, and their relationships with the gods. It serves as an important source for understanding the cultural and political landscape of early medieval Scandinavia.