Рязанская губерния
The Ryazan Governorate became separate from the Moscow Governorate in 1796. Ryazan Oblast was formed out of the Moscow and Voronezh oblasts in 1937. It took its present form in 1954 when some of it’s southern districts were ceded to the newly established Lipetsk Oblast. Also in 1954, it was ceded parts of southern Moscow Oblast and no border changes happened afterwards.