Mysaria's conversation with Helaena on her way out the door is presumably a nod to the fact that in Fire & Blood, it's unknown if Helaena jumped or was pushed, and Mysaria is mentioned as a possible suspect.

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That's Garibald Grey over Daemon's shoulder; a Riverlands knight, in the book he had the line to Criston Cole about building a sept out of the bones of traitors & indirectly coined the name "Butcher's Ball" for the ensuing battle. #FireAndBloodFacts #HouseOfTheDragon

The smoke rising from Sheepstealer wounds during the big four way dragon fight is due to the fact that dragon blood smokes when exposed to air, part of their whole "fire made flesh" mystique. #FireAndBloodFacts #HouseOfTheDragon #HotD

The line about villagers discussing a "wild girl living among nettles & sheep" is a wink at/middle finger to (depending on how invested you are in it) the storyline of Nettles in Fire & Blood, a Dragonseed who claims Sheepstealer & is NOT Rhaena. #FireAndBloodFacts #HotD #HouseOfTheDragon

Dreamfyre is the oldest dragon in Westeros after Vhagar (and maybe Sheepstealer) - read more about her pre-Helaena adventures in my lastest Fire & Blood Files column! #FireAndBloodFacts #HotD #HouseOfTheDragon

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Honeyholt is the seat of House Beesbury; they rose in support of Rhaenyra (and were subsequently defeated by Ormund Hightower's host, making it available to Ulf) after Lord Lyman Beesbury, Master of Coin, was killed by Criston Cole. #FireAndBloodFacts #HouseOfTheDragon #HotD

When Rhaenrya is hearing petitions and cuts her hand on the Iron Throne, it's the statue of Viserys, her father, to which she looks (you can tell its him cuz it's holding a Lego model of Valyria). He famously suffered many cuts from the throne in his rule.

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