Marquis Ai of Cai
Marquis Ai of Cai( 蔡哀侯)( died 675 BC), born Jī Xiànwǔ( 姫獻舞), was the thirteenth ruler of the State of Cai from 695 BC to 675 BC.
He was the only known son of Marquis Huan of Cai( 蔡桓侯), his predecessor.
His reign was a period of 20 years.
In the autumn of 684 BC, King Wen of Chu conquered the State of Cai and took the reigning Marquis as a prisoner of war.
But King Wen of Chu restored the state after Marquis Ai praised Madam Xī( 息妫).
He was succeeded by his son.
King Wen of Chu
King Wen of Chu (died 677 BC) was from 689 to 677 BC king of the state of Chu during the Spring and Autumn period of ancient China.
He was born Xiong Zi  and King Wen was his posthumous title.
King Wen succeeded his father King Wu of Chu, who died in 690 BC.
He died in 677 BC and was succeeded by his son Du'ao.
He also had another son, King Cheng of Chu.
Tai Si
Tai Si( c. 12th – 11th century BC) was the wife of King Wen of Zhou and is revered as a highly respected woman of ancient China.
She was a descendant of Yu the Great- founder of the Xia Dynasty- and was the mother of ten sons, including King Wu of Zhou- founder of the Zhou Dynasty- and his younger brother the Duke of Zhou.
Particularly respected by Wu Zetian, China's only Empress regnant, Tai Si and King Wen were posthumously given the temple names" Shizu" in 690 AD.
King Huai of Chu
King Huai of Chu( died 296 BC) was from 328 to 299 BC the king of the state of Chu during the Warring States period of ancient China.
He was born Xiong Huai and King Huai( 懷, a different Chinese character) was his posthumous title.
King Huai succeeded his father King Wei of Chu, who died in 329 BC.
In 299 BC King Huai was trapped and held hostage by King Zhao of Qin when he went to the state of Qin for negotiation, and his son King Qingxiang of Chu ascended the throne.
King Huai managed to escape but was recaptured by Qin.
Three years later, he died in captivity.
One of his grandsons was later reinstated as King of Chu as the Qin dynasty descended into chaos, also under the name" King Huai of Chu"; this grandson was later known as Emperor Yi of Chu.
King Wu of Chu
King Wu of Chu
(Chinese: 楚武王, died 690 BC) was the first king of the State of Chu during the Spring and Autumn period of ancient China.
He was the second son of Xiao'ao, and brother of former ruler Fenmao whom he is rumored to have murdered in 740 BC in order to usurp the throne.
He was also the first ruler among Zhou's vassal states to style himself "king"; Chu was one of a few states whereby its rulers declared themselves kings during the Spring and Autumn period.
Other states include Wu and Yue.
Xiong Li
Xiong Li( reigned 11th century BC) was an early ruler of the state of Chu during the early Zhou Dynasty of ancient China.
He succeeded his father Yuxiong, who was the teacher of King Wen of Zhou, the first king of Zhou.
Xiong Li's ancestral surname was Mi, but he adopted the second character of his father's name – Xiong, literally" bear" – as the royal clan name of Chu, which is now the 72nd most common surname in China.
Xiong Li was succeeded by his son, Xiong Kuang, and his grandson Xiong Yi would later be enfeoffed by King Cheng of Zhou and granted the hereditary noble rank of viscount.
King Ai of Chu
King Ai of Chu (died 228 BC), born Xiong You , was a king of Chu during the late Warring States period of ancient China.
He was the son of King Kaolie of Chu and full younger brother of King You of Chu.
Prince You succeeded his elder brother as king in 228 BC, but was murdered only two months later by the supporters of his elder half-brother Prince Fuchu.
Prince Fuchu ascended the throne as king of Chu.
King Wen of Zhou
King Wen of Zhou( 1112 1050 BC, the Civilizing King) was count of Zhou during the late Shang dynasty in ancient China.
Although it was his son
Wu who conquered the Shang following the Battle of Muye, Count Wen was posthumously honored as the founder of the Zhou dynasty and titled King.
Many of the hymns of the" Classic of Poetry" are praises to the legacy of King Wen.
Some consider him the first epic hero of Chinese history.
King Cheng of Chu
King Cheng of Chu( died 626 BC) was from 671 to 626 BC king of the state of Chu during the Spring and Autumn period of ancient China.
He was born Xiong Yun to King Wen of Chu, and King Cheng was his posthumous title.
In 672 BC Xiong Yun's older brother king Du'ao tried to kill him, and he escaped to the state of Sui.
He then attacked and killed Du'ao with the help of Sui, and succeeded Du'ao as king of Chu.
In the summer of 648 BC, the State of Huang was annexed by the state of Chu. King Cheng's wife was Zheng Mao.
Their son was possibly King Mu of Chu.
Nangong Kuo (Western Zhou)
Nangong Kuo( fl. 11th century BC) was a top official of King Wen of Zhou during the late Shang and early Western Zhou dynasties.
In the" Jun Shi"( 君奭) chapter of the" Classic of History", the Duke of Zhou names him as one of the five key advisers of King Wen, together with Guo Shu, Hong Yao, Tai Dian, and San Yisheng.
After King Wen's death, Nangong Kuo became a key adviser of his son King Wu.

Question: Who is the paternal grandfather of King Wen Of Chu?
Answer: Xiao'ao