Duke Zhao of Jin
Duke Zhao of Jin (died 526 BC) was from 531 to 526 BC the ruler of the State of Jin, a major power during the Spring and Autumn period of ancient China.
His ancestral name was Ji, given name Yi, and Duke Zhao was his posthumous title.
He succeeded his father, Duke Ping of Jin, who died in 532 BC.
Duke Zhao of Jin reigned for 6 years and died in 526 BC.
During his reign the state was increasingly dominated by the six powerful clans: Han, Zhao, Wei, Fan, Zhonghang, and Zhi.
He was succeeded by his son, Duke Qing of Jin.
Marquis Ai of Jin
Marquis Ai of Jin, ancestral name Ji( 姬), given name Guang( 光), was the fifteenth ruler of the state of Jin.
He was also the fifth ruler of Jin in the Spring and Autumn period.
He reigned for nine years.
In 710 BC, the eighth year of his reign, Marquis Ai of Jin attacked a small state south of Jin called Xingting( 陘廷).
The next year, Xingting, allied with Duke Wu of Quwo, sacked Yi( 翼), the capital of Jin.
After getting his half- uncle, Han Wan, to kill an escaping Marquis Ai of Jin, The Zhou king ensured that Ai's son, Marquis Xiaozi of Jin, became the next ruler of Jin.
Duke Ping of Jin
Duke Ping of Jin (died 532 BC) was from 557 to 532 BC the ruler of the State of Jin, a major power during the Spring and Autumn period of ancient China.
His ancestral name was Ji, given name Biao, and Duke Ping was his posthumous name.
He succeeded his father, Duke Dao of Jin, who died in 558 BC.
Marquis Li of Jin
Marquis Li of Jin, ancestral name Ji( 姬), given name Fu( 福), was the fifth ruler of the state of Jin during the Western Zhou Dynasty.
After his father, Marquis Cheng of Jin, died, he ascended the throne of Jin.
After he died in 859 BC, his son, Yijiu, ascended the throne as the next ruler of Jin: Marquis Jing of Jin.
In 1992, an ancient tomb dating back to the Zhou Dynasty was discovered in Quwo County, Shanxi.
One of the tombs was marked as the tomb of Marquis Li of Jin.
Quwo County is known to be the site of the ancient capital of the state of Jin.
Duke Xian of Jin
Duke Xian of Jin( died 651 BC), ancestral name Ji( 姬), given name Guizhu( 詭諸), was the nineteenth ruler of the State of Jin.
He was also the ninth ruler of Jin in the Spring and Autumn period and the second duke of Jin.
When his father, Duke Wu of Jin, died in 677 BC, Guizhu ascended the throne of Jin and became Duke Xian of Jin.
He reigned for 26 years.
He moved the capital from Quwo( 曲沃) to Jiang( 絳).
He was named after a Rongdi tribe( 戎狄族) leader Guizhu( 詭諸) whom his father, Duke Wu of Jin, captured alive.
During his reign, the State of Jin was one of the most powerful and largest states due to his conquests in many small neighboring states.
He is also renowned for the slaughter and exile of many royal family members of Jin and for favoring one of his concubines named Li Ji.
Marquis Wu of Jin
Marquis
Wu of Jin, Ancestral name is Ji( 姬), given name is Ningzu( 寧族), was the third ruler of the state of Jin during the Western Zhou Dynasty.
After his father, Xie, Marquis of Jin died, he ascended the throne of Jin.
After he died, his son, Furen, ascended the throne as the next ruler of Jin: Marquis Cheng of Jin.
Marquis Xi of Jin
Marquis Xi of Jin, ancestral name Ji( 姬), given name Situ( 司徒), was the seventh ruler of the state of Jin during the Western Zhou Dynasty.
After his father Marquis Jing of Jin died, he ascended the throne of Jin.
In 823 BC, the 18th year of his reign, he died and his son Ji, ascended the throne as the next ruler of Jin: Marquis Xian of Jin.
Marquis Xian of Jin
Marquis Xian of Jin, ancestral name Ji( 姬), given name Su( 蘇), was the eighth ruler of the state of Jin during the Western Zhou Dynasty.
After his father, Marquis Xi of Jin died in 823 BC, he ascended the throne of Jin.
In 812 BC, the 11th year of his reign, he died and his son Feiwang, ascended the throne as the next ruler of Jin: Marquis Mu of Jin.
Marquis Xiao of Jin
Marquis Xiao of Jin, ancestral name Ji( 姬), given name Ping( 平), was the thirteenth ruler of the state of Jin.
He was also the third ruler of Jin in the Spring and Autumn period.
He ruled for sixteen years.
In 739 BC, the 7th year of the reign of Marquis Zhao of Jin, a Jin official named Panfu( 潘父) murdered Marquis Zhao of Jin and welcomed Uncle Huan of Quwo to ascend the throne of Jin.
He accepted Panfu's welcome and entered Jin.
When he entered, the Jin people brought troops to stop him from entering.
He lost and receded back to Quwo.
Then, the Jin people asked the son of Marquis Zhao of Jin, Ping, to ascend the throne and he became the next ruler of Jin: Marquis Xiao of Jin.
After he ascended the throne, he killed Panfu in revenge for his father.
In 724 BC, the 15th year of his reign, the son of Uncle Huan of Quwo, Count Zhuang of Quwo, murdered Marquis Xiao of Jin while in the capital of Jin, Yi( 翼).
Then, Jin troops attacked Count Zhuang of Quwo so he retreated back to Quwo.
The Jin people asked the son of Marquis Xiao of Jin, Xi, to become the next ruler of Jin and he became Marquis E of Jin.
Marquis Zhao of Jin
Marquis Zhao of Jin, ancestral name Ji( 姬), given name Bo( 伯), was the twelfth ruler of the state of Jin.
He was also the second ruler of Jin in the Spring and Autumn period.
In 745 BC, the first year of his reign, he gave the land called Quwo, modern Quwo County in Shanxi, to his uncle, Chengshi.
This is considered as when Jin split into two, the two being Jin and Quwo.
Chengshi was later known as Huan Shu of Quwo.
In 739 BC, the 7th year of his reign, a Jin official named Panfu( 潘父) murdered Marquis Zhao of Jin and welcomed Huan Shu of Quwo to ascended the throne of Jin.
He accepted Panfu's welcome and entered Jin.
When he entered, the Jin people brought troops to stop him from entering.
He lost and retreated back to Quwo.
Then, the Jin people asked the son of Marquis Zhao of Jin, Ping, to ascend the throne and he became the next marquis: Marquis Xiao of Jin.

Question: Who is Duke Zhao Of Jin's paternal grandfather?
Answer: Duke Dao of Jin