This video has a scene which transitions between different flags over Harrenhal as new Houses take control; this establishes the sigils of, in order:
- House Qoherys - a red and yellow saltire (diagonal cross), between four white skulls, on a black field. This looks similar to the House Hoare sigil, but on closer inspection, you will see that it has four skulls of equal shape, while the House Hoare sigil is a quartered saltire showing a ship, a tree, a grapevine, and a raven. The House Hoare sigil appears in the "Dragonstone" featurette at the beginning, but I don't remember if a better image of it appears in a different video of the Season 2 Complete Guide to Westeros.
- House Towers - five towers
- House Harroway - a single large castle, countercharged over a bend in the middle (orange and black, though this doesn't show well in the video)
- House Strong - three central stripes of blue, red, and green (this doesn't show up well in the video) on a white field.
- House Lothston - a single large bat countercharged on a bend (argent and or)
- House Whent - nine black bats on a gold field