In 6:52 Storm, Bann Hargrave's knights helped drive Avvar invaders from Ferelden's lowlands. When the king asked Hargrave to pursue the retreating tribes, she refused, demanding funds to build a keep. Caught between a fractured court, Hargrave's knights, and an impending famine, the king reluctantly granted her a large parcel of land to the south.
After defeating the Avvar regrouping in the boglands, the bann built her castle. As the famine grew worse, the wisdom behind her choice of location became clear: Hargrave Keep ate well, dining on a steady supply of fish and game while the farmlands starved.
—From Notable Fortresses, Castles, Towers and Other Edifices of Interest in Ferelden, by Henry Lannon
The codex incorrectly dates 6:52 as being in the Storm Age, when it was truly the Steel Age. Whether the number or the age name is muddled is unclear. The same mistake appears in inscription of Landmarks in the Mire.