Question: Who is the father-in-law of Từ Dụ?

Knowledge 1: Từ Dụ
Từ Dụ or Từ Dũ (20 June 1810 – 12 May 1902), born Phạm Thị Hằng (范氏姮), was the wife of Thiệu Trị and mother of Tự Đức.Hằng was a daughter of Phạm Đăng Hưng.She was granted the title Empress Dowager Từ Dụ  after Tự Đức ascended the throne.Tự Đức died in 1883.Three regents, Nguyễn Văn Tường, Tôn Thất Thuyết and Trần Tiễn Thành, declared Dục Đức, the eldest adoptive-son of Tự Đức, as the new emperor.Three days later, they deposed Dục Đức and enthroned Hiệp Hòa.Từ Dụ was elevated to the position of one of the "Tam Cung" (三宮) together with Trang Ý and Học phi.Từ Dụ played a significant role in the dethronement of Hiệp Hòa, whom was a pro-French emperor, and enthroned Kiến Phúc.In 1885, she was granted the title Grand Empress Dowager Từ Dụ .Tôn Thất Thuyết decided to launch the Cần Vương movement against French colonists."Tam Cung" fled to Tomb of Tự Đức together with Emperor Hàm Nghi.Thuyết decided to take them to a mountain base at Tân Sở, and then went to China to hide and seek reinforcements. "Tam Cung" refused, and came back to Huế.She was granted the title Great Grand Empress Dowager Từ Dụ  by Thành Thái in 1889.She died in 1902, and was given the posthumous name "Empress Nghi Thiên".A hospital in Ho Chi Minh City was named after her. [SEP] Knowledge 2: Thiệu Trị
Thiệu Trị (lit. "inheritance of prosperity"; 6 June 1807 – 4 November 1847), personal name Nguyễn Phúc Miên Tông or Nguyễn Phúc Tuyền, was the third emperor of the Nguyễn Dynasty.He was the eldest son of Emperor Minh Mạng, and reigned from 14 February 1841 until his death on 4 November 1847.
Knowledge 1: Từ Dụ
Từ Dụ or Từ Dũ (20 June 1810 – 12 May 1902), born Phạm Thị Hằng (范氏姮), was the wife of Thiệu Trị and mother of Tự Đức.Hằng was a daughter of Phạm Đăng Hưng.She was granted the title Empress Dowager Từ Dụ  after Tự Đức ascended the throne.Tự Đức died in 1883.Three regents, Nguyễn Văn Tường, Tôn Thất Thuyết and Trần Tiễn Thành, declared Dục Đức, the eldest adoptive-son of Tự Đức, as the new emperor.Three days later, they deposed Dục Đức and enthroned Hiệp Hòa.Từ Dụ was elevated to the position of one of the "Tam Cung" (三宮) together with Trang Ý and Học phi.Từ Dụ played a significant role in the dethronement of Hiệp Hòa, whom was a pro-French emperor, and enthroned Kiến Phúc.In 1885, she was granted the title Grand Empress Dowager Từ Dụ .Tôn Thất Thuyết decided to launch the Cần Vương movement against French colonists."Tam Cung" fled to Tomb of Tự Đức together with Emperor Hàm Nghi.Thuyết decided to take them to a mountain base at Tân Sở, and then went to China to hide and seek reinforcements. "Tam Cung" refused, and came back to Huế.She was granted the title Great Grand Empress Dowager Từ Dụ  by Thành Thái in 1889.She died in 1902, and was given the posthumous name "Empress Nghi Thiên".A hospital in Ho Chi Minh City was named after her. [SEP] Knowledge 2: Empress Dowager Dong
Empress Dowager Dong (died 189), personal name unknown, formally known as Empress Xiaoren, was an empress dowager of the Eastern Han dynasty of China.She was never empress throughout her life because she was the wife of a marquis; she only became empress dowager because her son, Liu Hong (Emperor Ling), became the emperor by chance.During her son's reign, she developed a rivalry with her daughter-in-law, Empress He, because she wanted Emperor Ling's younger son, Liu Xie, to be crown prince while Empress He wanted her own son, Liu Bian to succeed his father.Emperor Ling died in 189 before he managed to designate either of his two sons as crown prince.Liu Bian eventually took the throne as Emperor Shao; Empress Dowager Dong, as the emperor's grandmother, became grand empress dowager, while her daughter-in-law became empress dowager.Empress DowagerHe eventually conspired with her brother, General-in-Chief He Jin, to unseat her mother-in-law from power.Grand Empress Dowager Dong died of illness shortly after her downfall; the common people held Empress Dowager He and her family responsible for the grand empress dowager's death.
Knowledge 1: Từ Dụ
Từ Dụ or Từ Dũ (20 June 1810 – 12 May 1902), born Phạm Thị Hằng (范氏姮), was the wife of Thiệu Trị and mother of Tự Đức.Hằng was a daughter of Phạm Đăng Hưng.She was granted the title Empress Dowager Từ Dụ  after Tự Đức ascended the throne.Tự Đức died in 1883.Three regents, Nguyễn Văn Tường, Tôn Thất Thuyết and Trần Tiễn Thành, declared Dục Đức, the eldest adoptive-son of Tự Đức, as the new emperor.Three days later, they deposed Dục Đức and enthroned Hiệp Hòa.Từ Dụ was elevated to the position of one of the "Tam Cung" (三宮) together with Trang Ý and Học phi.Từ Dụ played a significant role in the dethronement of Hiệp Hòa, whom was a pro-French emperor, and enthroned Kiến Phúc.In 1885, she was granted the title Grand Empress Dowager Từ Dụ .Tôn Thất Thuyết decided to launch the Cần Vương movement against French colonists."Tam Cung" fled to Tomb of Tự Đức together with Emperor Hàm Nghi.Thuyết decided to take them to a mountain base at Tân Sở, and then went to China to hide and seek reinforcements. "Tam Cung" refused, and came back to Huế.She was granted the title Great Grand Empress Dowager Từ Dụ  by Thành Thái in 1889.She died in 1902, and was given the posthumous name "Empress Nghi Thiên".A hospital in Ho Chi Minh City was named after her. [SEP] Knowledge 2: Empress Dowager Dong
Empress Dowager Dong (died 189), personal name unknown, formally known as Empress Xiaoren, was an empress dowager of the Eastern Han dynasty of China.She was never empress throughout her life because she was the wife of a marquis; she only became empress dowager because her son, Liu Hong (Emperor Ling), became the emperor by chance.During her son's reign, she developed a rivalry with her daughter-in-law, Empress He, because she wanted Emperor Ling's younger son, Liu Xie, to be crown prince while Empress He wanted her own son, Liu Bian to succeed his father.Emperor Ling died in 189 before he managed to designate either of his two sons as crown prince.Liu Bian eventually took the throne as Emperor Shao; Empress Dowager Dong, as the emperor's grandmother, became grand empress dowager, while her daughter-in-law became empress dowager.Empress DowagerHe eventually conspired with her brother, General-in-Chief He Jin, to unseat her mother-in-law from power.Grand Empress Dowager Dong died of illness shortly after her downfall; the common people held Empress Dowager He and her family responsible for the grand empress dowager's death.

Answer: Minh Mạng