Lagertha was, according to legend, a Danish Viking shieldmaiden from what is now Norway, and the onetime wife of the famous Viking Ragnar Lodbrok. Her tale, as recorded by the chronicler Saxo in the 12th century, may be a reflection of tales about Þorgerðr Hölgabrúðr, a Norse deity. Her name as recorded by Saxo, Lathgertha, is likely a Latinization of the Old Norse Hlaðgerðr (Hladgerd).
Denmark was the heartland of viking society in the viking age between 800-1050 AD. Viking raids left from Denmark and fleets of Danish viking ships attacked and plundered towns, churches and monasteries throughout Western Europe and sailed as far away as Constantinople.