The Relief of Sow's Horn was the retaking of Sow's Horn by royal forces, during the War of the Lords Scorned in 333 AC. Having freed Duskendale, the royal forces now had the rebels on the run northwest, and were free to march on their keeps to retake them.

Yet again, the Crown's armies were met by a small garrison, and easily outmatched them in battle. Before long, the castle fell, and all that remained was Antlers before King Aegon VI could march on Harrenhal.