1500-year-old viking sword found in Swedish lake

An 8-year-old girl, Saga Vanecek, while playing in a lake adjacent to her home in Sweden found a 1500-year-old sword.  The sword is roughly 3-feet long, and has preserved wood and metal around it.  Game of thrones fans on social media websites have started speculating about it that, whether a wealthy noble was buried in the lake, like in a scene from Game of Thrones.