The Arryn House logo is composed of a crescent moon on the left side that's empty part is on the right. There is a bird then on the right side flying into the little slot of the crescent moon.
This Arryn House icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 5,500 icons, all in the same style and quality.