Question: When was Chiang Ching-kuo's father born?

Context paragraphs:
Chiang Ching-kuo Memorial Song: The Chiang Ching-kuo Memorial Song was written shortly after Republic of China President Chiang Ching-kuo died in 1988.  The music composer was Chinese composer Hwang Yau-tai (Huang You-di) who also composed the "Chiang Kai-shek Memorial Song" in 1975.  Chiang Ching-kuo was the son of the late President Chiang Kai-shek.  Along with his father, Chiang Ching-kuo fled Mainland China to Taiwan in 1949 as the Chinese Communists took control of the Mainland.

Three Noes: The Three-Noes Policy () is a policy established in April 1979 and maintained by President Chiang Ching-kuo of the Republic of China, commonly known as "Taiwan", in response to the People’s Republic of China's attempts to have direct contact with the ROC (see Three Links).  When the United States broke diplomatic ties with the ROC in 1979, the PRC believed that it had complete leverage in convincing the ROC government to talk.  President Chiang Ching-kuo refused, reiterating that there were to be “no contact, no compromise and no negotiation” (不接觸，不談判，不妥協) with the Chinese Communists.

Chiang Kai-shek: Chiang Kai-shek (October 31, 1887 – April 5, 1975), also romanized as Chiang Chieh-shih and known as Chiang Chungcheng, was a Chinese statesman, political and military leader who served as the leader of the Republic of China.

Demos Chiang: Demos Yu-bou Chiang (), born on September 10, 1976 in Taipei, Taiwan, is a Taiwanese businessman.  He founded DEM Inc. (橙果設計), a popular design studio in Taiwan in July 2003 and has served as its chairman since then.  He is also known for being the great-grandson of the late Republic of China (ROC) President Chiang Kai-shek and the grandson of late President Chiang Ching-kuo.  His grandmother was Faina Ipatyevna Vakhreva, also known as Chiang Fang-liang, making him Eurasian.

Chiang Hsiao-wu: Chiang Hsiao-wu (; also known as Alex Chiang; April 25, 1945 - July 1, 1991) was the second son of Chiang Ching-kuo, the President of the Republic of China in Taiwan from 1978 to 1988.  His mother is Faina Ipatyevna Vakhreva, also known as Chiang Fang-liang.  He had one older brother, Hsiao-wen, one older sister, Hsiao-chang, and one younger brother, Hsiao-yung.  He also had two half-brothers, Winston Chang and John Chiang, with whom he shared the same father.

Chiang Hsiao-wen: Chiang Hsiao-wen (; also known as Alan Chiang; December 1935 – April 14, 1989) was the eldest son of Chiang Ching-kuo, the President of the Republic of China in Taiwan from 1978 to 1988.  His mother is Faina Ipatyevna Vakhreva, also known as Chiang Fang-liang.  He had one younger sister, Hsiao-chang, and two younger brothers, Hsiao-wu and Hsiao-yung.  He had two half-brothers, Winston Chang and John Chiang, with whom he shared the same father.

Chiang Wan-an: Wayne Chiang or Chiang Wan-an (); born 26 December 1978, formerly surnamed Chang (), is a Kuomintang politician in Taiwan.  He is the son of John Chiang and a grandson of Chiang Ching-kuo.  Chiang Wan-an worked as a business lawyer in the United States prior to beginning a political career in Taiwan.

Chiang Hsiao-chang: Chiang Hsiao-chang (; 1938 –) is the only daughter of Chiang Ching-kuo, the President of the Republic of China in Taiwan from 1978 to 1988.  Her mother is Faina Ipatyevna Vakhreva, also known as Chiang Fang-liang.  She had one older brother, Hsiao-wen, and two younger brothers, Hsiao-wu and Hsiao-yung.  She is the only living member of Chiang Ching-kuo's legitimate children, and was the only one among the siblings who could converse in Russian with their mother.

Chiang Ching-kuo Foundation: The Chiang Ching-kuo Foundation for International Scholarly Exchange (CCKF) () is a private, non-profit organisation located in Taipei, Taiwan, that provides support for research grants on Chinese studies in the humanities and social sciences at overseas institutions.  It was founded in 1989 and named after Chiang Ching-kuo, leader of the Republic of China from 1972 to 1988.  The foundation also has a regional office in McLean, Virginia in the United States.

Chiang Wei-kuo: Chiang Wei-kuo (, or Wego Chiang; October 6, 1916 – September 22, 1997) was an adopted son of President Chiang Kai-shek, adoptive brother of President Chiang Ching-kuo, retired Republic of China Army (ROCA) general, and an important figure in the Kuomintang (KMT).  His courtesy names were Jian'gao (建鎬) and Niantang (念堂).

Supporting paragraphs: Chiang Ching-kuo Memorial Song Chiang Kai-shek
Answer: October 31, 1887