"The histories say the crannogmen grew close to the children of the forest in the days when the greenseers tried to bring the hammer of the waters down upon the Neck. It may be that they have secret knowledge."
— A Clash of Kings, Theon IV
Giving up all the lands of Westeros save for the deep forests, the children won from the First Men the promise that they would no longer cut down the weirwoods. All the weirwoods of the isle on which the Pact was forged were then carved with faces so that the gods could witness the Pact, and the order of green men was made afterward to tend to the weirwoods and protect the isle.
— The World of Ice and Fire, Ancient History: The Coming of First Men
Some few children may have fled to the Neck, where there was safety amidst the bogs and crannogs, but if they did, no trace of them remains. It is possible that a few survived on the Isle of Faces, as some have written, under the protection of the green men, whom the Andals never succeeded in destroying. But again, no definitive proof has ever been found.
— The World of Ice and Fire, Ancient History: The Arrival of the Andals
It was here amidst these grasses that civilization was born in the Dawn Age. Ten thousand years ago or more, when Westeros was yet a howling wilderness inhabited only by the giants and children of the forest, the first true towns arose beside the banks of the river Sarne and beside the myriad vassal streams that fed her on her meandering course northward to the Shivering Sea.
Some maesters believe that the First Men originated here before beginning the long westward migration that took them across the Arm of Dorne to Westeros.
— The World of Ice and Fire, Beyond the Free Cities: The Grasslands
She smiled. "Ravens can't find Greywater Watch, no more than our enemies can."
"Why not?"
"Because it moves," she told him.
— A Clash of Kings, Bran IV
Only the legends persist. From such we know of the Fisher Queens, who ruled the lands adjoining the Silver Sea—the great inland sea at the heart of the grasslands—from a floating palace that made its way endlessly around its shores.
— The World of Ice and Fire, Beyond the Free Cities: The Grasslands
Legend says that the great floods that broke the land bridge that is now the Broken Arm and made the Neck a swamp were the work of the greenseers, who gathered at Moat Cailin to work dark magic.
— The World of Ice and Fire, Ancient History: The Coming of First Men
Just beyond, through the mists, she glimpsed the walls and towers of Moat Cailin … or what remained of them. Immense blocks of black basalt, each as large as a crofter's cottage, lay scattered and tumbled like a child's wooden blocks, half-sunk in the soft boggy soil. Nothing else remained of a curtain wall that had once stood as high as Winterfell's. The wooden keep was gone entirely, rotted away a thousand years past, with not so much as a timber to mark where it had stood. All that was left of the great stronghold of the First Men were three towers … three where there had once been twenty, if the taletellers could be believed.
— A Game of Thrones, Catelyn VIII
Sufficient tales survive to convince most maesters of the past existence of the Silver Sea, though because of diminishing rainfall over the centuries, it has shrunk so severely that today only three great lakes remain where once its waters glistened in the sun.
— The World of Ice and Fire, Beyond the Free Cities: The Grasslands
Singers say Ser Addam had flown from King’s Landing to the Gods Eye, where he landed on the sacred Isle of Faces and took counsel with the Green Men.
The Fisher Queens were wise and benevolent and favored of the gods, we are told, and kings and lords and wise men sought the floating palace for their counsel.
— The World of Ice and Fire, Beyond the Free Cities: The Grasslands
The gods the children worshipped were the nameless ones that would one day become the gods of the First Men—the innumerable gods of the streams and forests and stones. It was the children who carved the weirwoods with faces, perhaps to give eyes to their gods so that they might watch their worshippers at their devotions.
— The World of Ice and Fire, Ancient History: The Dawn Age
The God-Kings of Ib, before their fall, did succeed in conquering and colonizing a huge swathe of northern Essos immediately south of Ib itself, a densely wooded region that had formerly been the home of a small, shy forest folk. Some say that the Ibbenese extinguished this gentle race, whilst others believe they went into hiding in the deeper woods or fled to other lands. The Dothraki still call the great forest along the northern coast the Kingdom of the Ifequevron, the name by which they knew the vanished forest-dwellers.
The fabled Sea Snake, Corlys Velaryon, Lord of the Tides, was the first Westerosi to visit these woods. After his return from the Thousand Islands, he wrote of carved trees, haunted grottoes, and strange silences. A later traveler, the merchant-adventurer Bryan of Oldtown, captain of the cog Spearshaker, provided an account of his own journey across the Shivering Sea. He reported that the Dothraki name for the lost people meant "those who walk in the woods." None of the Ibbenese that Bryan of Oldtown met could say they had ever seen a woods walker, but claimed that the little people blessed a household that left offerings of leaf and stone and water overnight.
— The World of Ice and Fire, Beyond the Free Cities: Ib
In the southeast the proud city-states of the Qaathi arose; in the forests to the north, along the shores of the Shivering Sea, were the domains of the woods walkers, a diminutive folk whom many maesters believe to have been kin to the children of the forest.
— The World of Ice and Fire, Beyond the Free Cities: The Grasslands