Seven Kingdoms: Seowyn's Crossing
Angtharius, also called the Iron Protector, is a longsword with a very heavy crossguard. The sword is enchanted with various enhancements that make it strike harder and more accurately, but it also bestows protection on the one who carries it into the fray, thus giving it his name.
Angtharius was the sword of Baron Faelwyr Greenfields, and, after the fall of Hallowir’s Watch, went to his cousin Kevanra Greenfields. Since she preferred the spear, the sword was relegated to the baronial treasury, and it remained unused for nearly 300 years.