It split into several appanages, which were later incorporated into the Grand Principality of Moscow.

[3] Subsequently, the principality was divided into several appanages, including Obolensk.

[4] By the 1350s, the princes of the Upper Oka principalities were likely dependent on Moscow.

[10] N. P. Likhachev noted that the chronicle source confirms the resettlement of people in Muscovite service to Novgorod in the years 1488–1489.

[11] In 1503, Ivan III bequeathed his oldest surviving son, Vasily, the grand principality along with the towns bordering Ryazan, including Tarusa, Gorodets, and others.