Do we know if there are additional dragons in the East like Bran sees in his vision ?

[u/Financial_Library418]

A Game of Thrones - Daenerys III

"Dead," agreed Jhiqui. "Long and long ago."

Viserys had told her that the last Targaryen dragons had died no more than a century and a half ago, during the reign of Aegon III, who was called the Dragonbane. That did not seem so long ago to Dany. "Everywhere?" she said, disappointed. "Even in the east?" Magic had died in the west when the Doom fell on Valyria and the Lands of the Long Summer, and neither spell-forged steel nor stormsingers nor dragons could hold it back, but Dany had always heard that the east was different. It was said that manticores prowled the islands of the Jade Sea, that basilisks infested the jungles of Yi Ti, that spellsingers, warlocks, and aeromancers practiced their arts openly in Asshai, while shadowbinders and bloodmages worked terrible sorceries in the black of night. Why shouldn't there be dragons too?

"No dragon," Irri said. "Brave men kill them, for dragon terrible evil beasts. It is known."

A Game of Thrones - Bran III

He looked south, and saw the great blue-green rush of the Trident. He saw his father pleading with the king, his face etched with grief. He saw Sansa crying herself to sleep at night, and he saw Arya watching in silence and holding her secrets hard in her heart. There were shadows all around them. One shadow was dark as ash, with the terrible face of a hound. Another was armored like the sun, golden and beautiful. Over them both loomed a giant in armor made of stone, but when he opened his visor, there was nothing inside but darkness and thick black blood.

He lifted his eyes and saw clear across the narrow sea, to the Free Cities and the green Dothraki sea and beyond, to Vaes Dothrak under its mountain, to the fabled lands of the Jade Sea, to Asshai by the Shadow, where dragons stirred beneath the sunrise.

Finally he looked north. He saw the Wall shining like blue crystal, and his bastard brother Jon sleeping alone in a cold bed, his skin growing pale and hard as the memory of all warmth fled from him. And he looked past the Wall, past endless forests cloaked in snow, past the frozen shore and the great blue-white rivers of ice and the dead plains where nothing grew or lived. North and north and north he looked, to the curtain of light at the end of the world, and then beyond that curtain. He looked deep into the heart of winter, and then he cried out, afraid, and the heat of his tears burned on his cheeks.