Question: What year did the post end of Governor of the city where the author of Quadragesimo Anno died?

Knowledge 1: Quadragesimo anno
Quadragesimo anno (Latin for "In the 40th Year") is an encyclical issued by Pope Pius XI on 15 May 1931, 40 years after Leo XIII's encyclical "Rerum novarum," further developing Catholic social teaching. Unlike Leo XIII, who addressed the condition of workers, Pius XI discusses the ethical implications of the social and economic order. He describes the major dangers for human freedom and dignity arising from unrestrained capitalism, socialism, and totalitarian communism. He also calls for the reconstruction of the social order based on the principles of solidarity and subsidiarity. [SEP] Knowledge 2: Flag of Vatican City
The flag of Vatican City was adopted on June 7, 1929, the year Pope Pius XI signed the Lateran Treaty with Italy, creating a new independent state governed by the Holy See. The Vatican flag is modeled on the 1808 yellow and white flag of the earlier Papal States, to which a papal tiara and keys were later added. The Vatican (and the Holy See) also refer to it, interchangeably, as the flag of the Holy See. [SEP] Knowledge 3: Governor of Vatican City
The post of Governor of Vatican City (Governatore dello Stato della Città del Vaticano in Italian) was held by Marchese Camillo Serafini from the foundation of the state in 1929 until his death in 1952. No successor was appointed, and the post itself was not mentioned in the Fundamental Law of Vatican City State issued by Pope John Paul II on 26 November 2000, which entered into force on 22 February 2001.
Knowledge 1: Quadragesimo anno
Quadragesimo anno (Latin for "In the 40th Year") is an encyclical issued by Pope Pius XI on 15 May 1931, 40 years after Leo XIII's encyclical "Rerum novarum," further developing Catholic social teaching. Unlike Leo XIII, who addressed the condition of workers, Pius XI discusses the ethical implications of the social and economic order. He describes the major dangers for human freedom and dignity arising from unrestrained capitalism, socialism, and totalitarian communism. He also calls for the reconstruction of the social order based on the principles of solidarity and subsidiarity. [SEP] Knowledge 2: Flag of Vatican City
The flag of Vatican City was adopted on June 7, 1929, the year Pope Pius XI signed the Lateran Treaty with Italy, creating a new independent state governed by the Holy See. The Vatican flag is modeled on the 1808 yellow and white flag of the earlier Papal States, to which a papal tiara and keys were later added. The Vatican (and the Holy See) also refer to it, interchangeably, as the flag of the Holy See. [SEP] Knowledge 3: Chihuahua (state)
Because of the general instability of the federal government during 1828, the installation of the new legislature did not take place until the middle of the following year. It was quickly dissolved by Governor Santiago de Baca Ortiz, who replaced it with a more pronounced Yorkino type. When Guerrero's liberal administration was overthrown in December, Gaspar de Ochoa aligned with Anastasio Bustamante, and in February 1830, organized an opposition group that arrested the new governor, F. Elorriaga, along with other prominent Yorkinos. He then summoned the legislature, which had been dissolved by Baca. The civil and military authorities were now headed by J. A. Pescador and Simón Ochoa.
Knowledge 1: Quadragesimo anno
Quadragesimo anno (Latin for "In the 40th Year") is an encyclical issued by Pope Pius XI on 15 May 1931, 40 years after Leo XIII's encyclical "Rerum novarum," further developing Catholic social teaching. Unlike Leo XIII, who addressed the condition of workers, Pius XI discusses the ethical implications of the social and economic order. He describes the major dangers for human freedom and dignity arising from unrestrained capitalism, socialism, and totalitarian communism. He also calls for the reconstruction of the social order based on the principles of solidarity and subsidiarity. [SEP] Knowledge 2: Flag of Vatican City
The flag of Vatican City was adopted on June 7, 1929, the year Pope Pius XI signed the Lateran Treaty with Italy, creating a new independent state governed by the Holy See. The Vatican flag is modeled on the 1808 yellow and white flag of the earlier Papal States, to which a papal tiara and keys were later added. The Vatican (and the Holy See) also refer to it, interchangeably, as the flag of the Holy See. [SEP] Knowledge 3: All in a Day
All in a Day is a 1986 children's picture book by Mitsumasa Anno. It features illustrations by Anno and several other internationally known illustrators: Eric Carle, Raymond Briggs, Nicolai Ye. Popov, Akiko Hayashi, Gian Calvi, Leo and Diane Dillon, Zhu Chengliang and Ron Brooks.

Answer: 1952