Halfdan Ragnarsson
... that Halfdan Ragnarsson was one of the leaders of the Great Heathen Army?
... that <b id="mwASE"><a href="./Halfdan_Ragnarsson" id="mwASI" rel="mw:WikiLink" title="Halfdan Ragnarsson">Halfdan Ragnarsson</a></b> was one of the leaders of the <a href="./Great_Heathen_Army" id="mwASM" rel="mw:WikiLink" title="Great Heathen Army">Great Heathen Army</a>?