Title: Koxinga
Content:  The one possible exception to this may have been his relationship with his mother, which has generally been described as being extremely affectionate, particularly in Chinese and Japanese sources. Their time together, however, was apparently very short – despite frequent entreaties from Zheng Zhilong for her to join him in China, Koxinga’s mother was only reunited with her son some time in 1645, and a year later she was killed when the Qing took Xiamen. A portrait of Zheng was in the hands of Yuchun who was his descendant in the eight generation. Koxinga's descendants live in both mainland China and 
Title: Koxinga
Content:  take Tong'an in Quanzhou prefecture in early 1647. However, Koxinga's forces lacked the ability to defend the newly occupied territory. Following the fall of Tong'an to Zheng, the Manchus launched a counterattack in the spring of 1647, during which they stormed the Zheng family's hometown of Anping. Koxinga's mother, Lady Tagawa, had come from Japan in 1645 to join her family in Fujian (Koxinga's younger brother, Tagawa Shichizaemon, remained in Japan). She did not follow her husband to surrender to the Qing Dynasty. She was caught by Manchu forces in Anping and committed suicide after refusal to submit to the enemy, according to traditional accounts.
Title: Koxinga
Content:  Zheng Chenggong, Prince of Yanping (27 August 1624 – 23 June 1662), better known internationally as Koxinga or Cheng Ch'eng-kung, was a Ming loyalist who resisted the Qing conquest of China in the 17th century, fighting them on China's southeastern coast. In 1661, Koxinga defeated the Dutch outposts on Taiwan and established a dynasty, the House of Koxinga, which ruled part of the island as the Kingdom of Tungning from 1661 to 1683.
Title: Koxinga
Content: Dong You, Queen of Tungning (董友) ; Zheng Jing ( 鄭經延平王; 25 October 1642 – 17 March 1681), Prince of Yanping, first son' ; Zheng Cong (輔政公 鄭聰), Duke Fu of Zheng, second son ; Zheng Yu (鄭裕;1660–1737), seventh son ; Lady Chuang (莊氏) ; Zheng Ming (鄭明), third son ; Zheng Rui (鄭睿), fourth son ; Zheng Zhi (鄭智;1660–1695), fifth son ; Lady Wen (溫氏) ; Zheng Kuan (鄭寬), sixth son ; Zheng Rou (鄭柔), ninth son ; Lady Shi (史氏) ; Zheng Wen (鄭溫;1662–1704), eight son ; Lady Chai (蔡氏) ; Zheng Fa (鄭發), tenth son ; Unknown: ; fourth daughters 
Title: Queen Dong
Content:  Queen Dong (17 October 1623 – 30 July 1681 ), birth name Dong You, posthumous name Chaowu Wangfei, was the princess consort of Koxinga and mother of Zheng Jing.
Title: Chinese people in Japan
Content: Koxinga or Zheng Chenggong, Prince of Yanping, Chinese Ming loyalist, founder of the House of Koxinga and the first ruler of the Kingdom of Tungning (currently Taiwan); born in Hirado, Hizen Province (currently Hirado, Nagasaki), son of a Chinese father (Zheng Zhilong) and a Japanese mother (Tagawa Matsu) 
Title: Koxinga
Content:  that the two men shared a "close bond of affection", there is an absence of any reliable contemporary evidence on Koxinga’s relationship with the Longwu Emperor. In contrast, Koxinga's father Zheng Zhilong left his Japanese wife not long after the birth of his son; Koxinga was a boy of seven when he finally joined his father on the Fujianese coast. It seems that Zheng Zhilong recognized his son’s talent and encouraged him in his studies and the pursuit of a career as a scholar-official, which would legitimize the power the Zheng family had acquired, using sometimes questionable means. Zheng Zhilong’s defection 
Title: Tagawa Matsu
Content:  Tagawa Matsu (田川マツ; 1601–1647) or Weng-shi (翁氏), was the mother of Koxinga, a national hero in mainland China and Taiwan and daughter of Tagawa Shichizaemon (田川七左衛門), a vassal of Hirado Domain. She was a Japanese who lived most of her life in the coastal town of Hirado, then later migrated to China.
Title: Koxinga
Content:  During the Siege of Fort Zeelandia, Koxinga executed Dutch missionary Antonius Hambroek and took his teenage daughter as a concubine. Other Dutch women were sold to Chinese soldiers to become their wives. In 1684 some of these Dutch wives were still captives of the Chinese.
Title: Koxinga
Content:  Koxinga died of malaria in June 1662, only a few months after defeating the Dutch in Taiwan, at the age of 37. There were speculations that he died in a sudden fit of madness when his officers refused to carry out his orders to execute his son Zheng Jing. Zheng Jing had had an affair with his wet nurse and conceived a child with her. Zheng Jing succeeded his father as the King of Tungning. As he descended into death, Koxinga relented and agreed to let his son Zheng Jing succeed him. Koxinga died as he passed into delirium and madness and expressed his regrets to his family and father.

Question: Who is the mother of Koxinga?
Answer: Tagawa Matsu.