House Greyjoy of Pyke is one of the Great Houses of Westeros. It rules over the Iron Islands, a harsh and bleak collection of forbidding islands off the west coast of Westeros, from the castle of Pyke on the island of the same name. Their sigil is a golden kraken on a black field, and their house motto is "We Do Not Sow." Members of the family tend to be attractive and well-built, with black hair.
The Greyjoys of Pyke claim descent from the Grey King of the Age of Heroes. Legend says the Grey King ruled not only the western isles but the sea itself, and took a mermaid to wife.
For thousands of years, raiders from the Iron Islands—called "ironmen" by those they plundered—were the terrors of the seas, sailing as far as the Port of Ibben and the Summer Isles. They prided themselves on their fierceness in battle and their sacred freedoms. Each island had its own "salt king" and "rock king". The High King of the Isles was chosen from among their number during the kingsmoot. In ancient times The Old Kraken was chosen as the King of the Iron Islands. He was said to be a member of House Greyjoy.
The cache is not at the posted coords. To Solve the Puzzle of House Greyjoy, you must learn what no Greyjoy would know.
The answer is in the book..
This is part of a series of caches based on "A Song of Ice and Fire." These are the books that the TV show "A Game of Thrones" is based on. The 'Unknown' caches in this series are nanos. Please bring your own pen and an extraction tool.