It is maintained that it existed in ancient times in Russia also, but through the calamities which overtook Russia—the Tartars, civil war, the interruption of relations with the East after the destruction of Constantinople—this institution fell into oblivion.
There are no more uses of "oblivion" in the book.
Show samples from other sources
And if he kept his eye peeled quickly he would see himself, an instant before oblivion,
Ray Bradbury -- Fahrenheit 451
The ache inside Thomas was deep and gnawing, and he tried to sink further into oblivion.