What is "lagertha"

Lagertha was, according to legend, a Viking shieldmaiden from what is now Norway, and the onetime wife of the famous Viking Ragnar Lothbrok. Her tale, as recorded by the chronicler Saxo in the 12th century, may be a reflection of tales about Thorgerd (Þorgerðr Hölgabrúðr), a Norse deity.

Her name as recorded by Saxo, , is likely a Latinisation of the Old Norse (Hladgerd). It is frequently rendered in English-language sources as "Lagertha", and has also been recorded as Ladgertha, Ladgerda or similar.