"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.
Yet the First Men were less learned than we are now, and credited things that their descendants today do not; consider Maester Yorrick's Wed to the Sea, Being an Account of the History of White Harbor from Its Earliest Days, which recounts the practice of blood sacrifice to the old gods. Such sacrifices persisted as recently as five centuries ago, according to accounts from Maester Yorrick's predecessors at White Harbor." -TWOIAF -The Dawn Age
I've finished it ...at last . Children Of The Forest bringing sacrifice to the Old Gods .
