a duchy can have any number of baronies-as can a county. the number of baronies depends on how many barons the overlord sets up.
A Grand Duchy is a state ("nation" in common, modern language) in which the Head of State (the ruler) is a Grand Duke. Similarly, a Duchy is a state where the ruler is a Duke
many
Very many.
many
how many counties are in NJ
The Grand Duchy of Karameikos has 64 pages.
quite a lot
A duchy
Duchy of Racibórz was created in 1172.
Duchy of Silesia ended in 1918.
Duchy of Silesia was created in 1163.
Duchy of Westphalia was created in 1180.
Duchy of Bielsko was created in 1572.
Duchy of Głubczyce was created in 1172.
Duchy of Zator was created in 1454.
Duchy of Zator ended in 1919.
Duchy of Limburg was created in 1065.