Vatican City
The name was first used in the Lateran Treaty, signed on 11 February 1929, which established the modern city-state. The name is taken from Vatican Hill, the geographic location of the state. "Vatican" is derived from the name of an Etruscan settlement, "Vatica" or "Vaticum" meaning garden, located in the general area the Romans called "vaticanus ager", "Vatican territory".
Vatican City
On 22 February 2011, Pope Benedict XVI promulgated a new "Law concerning citizenship, residency and access" to Vatican City, which became effective on 1 March. It replaced the 1929 "Law concerning citizenship and residence". There are 16 articles in the new law, whereas the old law had 33 articles. It updated the old law by incorporating changes made after 1929, such as the 1940 granting of Vatican City citizenship, "durante munere", to the members of the Holy See's diplomatic service. It also created a new category, that of official Vatican "residents", i.e., people living in Vatican City; these are not necessarily Vatican citizens.