Later, the original houses were decided to be demolished when the Konoe family moved to Tokyo, but the okura (a rice storehouse of the Edo bakufu) of Higashiyama was presented and used for storing the remained books and thus the name became a name of the library.
その後、近衛家の東京移住に伴って取り壊されることになった近衛邸のうち、東山の御蔵が献上されて残された文庫の保管に用いられたために、その名前がそのまま文庫名となった。