Emperor Fei of Chen
Emperor Fei of Chen( 陳廢帝)( 554?570), personal name Chen Bozong( 陳伯宗), courtesy name Fengye( 奉業), nickname Yaowang( 藥王), also known by his post -removal title of Prince of Linhai( 臨海王), was an emperor of the Chinese Chen Dynasty.
He was the son and heir of Emperor Wen, but after he came to the throne in 566, the imperial administration fell into infighting almost immediately.
The victor, Emperor Fei's uncle Chen Xu, deposed Emperor Fei in winter 568 and took the throne himself.
Emperor Fei of Jin
Emperor Fei of Jin
( 342 – November 23, 386), personal name Sima Yi( 司馬奕), courtesy name Yanling( 延齡), was an emperor of the Eastern Jin Dynasty( 265-420) in China.
He was the younger brother( from the same mother) of Emperor Ai and later deposed by military leader Huan Wen.
The title that he is normally referred to," Emperor Fei", is not a posthumous name as is usually the case with imperial common titles, but rather signified that he was deposed( with" Fei"( 廢) meaning" depose").
He is also commonly known by the title he was given after his removal, Duke of Haixi( 海西公).
Fujiwara no Nagara
, also known as Fujiwara no Nagayoshi, was a Japanese statesman, courtier and politician of the early Heian period.
He was the grandfather of Emperor Yōzei.
Emperor Xiaozhao of Northern Qi
Emperor Xiaozhao of Northern Qi(( 北) 齊孝昭帝)( 535–561), personal name Gao Yan( 高演), courtesy name Yan'an( 延安), was an emperor of Northern Qi.
He was generally considered a capable ruler, but ruled for less than two years before dying from injuries suffered from falling off a horse.
Northern Qi would not have another capable ruler after his death.
Gao Wei
Gao Wei( 高緯)( 557–577), often known in history as Houzhu of Northern Qi(( 北) 齊後 主), courtesy name Rengang( 仁綱), sometimes referred to by his later Northern Zhou- created title of Duke of Wen( 溫公), was an emperor of Northern Qi. During his reign, Northern Qi's imperial administration was plunged into severe corruption and wastefulness, with the military suffering after Gao Wei killed the great general Hulü Guang in 572.
Rival Emperor
Wu of Northern Zhou launched a major attack in 576, and Northern Qi forces collapsed.
Gao Wei, who formally passed the throne to his son Gao Heng, was captured while trying to flee to Chen Dynasty, and later that year, the Northern Zhou emperor executed him and almost all members of his clan.
Gao Heng
Gao Heng( 570 –577), often known in history as the Youzhu of Northern Qi(( 北) 齊幼主), was briefly an emperor of Northern Qi.
In 577, with Northern Qi under a major attack by rival Northern Zhou, Gao Heng's father Gao Wei, then emperor, wanted to try to deflect ill omens that portended a change in imperial status, and therefore passed the throne to Gao Heng.
Later that year, after they fled in face of Northern Zhou forces' arrival, they were captured and taken to the Northern Zhou capital Chang'an, where, in winter 577, Emperor Wu of Northern Zhou ordered them, as well as other members of the Gao clan, to commit suicide.
Northern Qi territory was seized by Northern Zhou, although for several years Gao Wei's cousin Gao Shaoyi claimed imperial title in exile under Tujue's protection.
Emperor Fei of Northern Qi
Emperor Fei of Northern Qi ((北)齊廢帝) (545–561), personal name Gao Yin (高殷), courtesy name Zhengdao (正道), posthumously Prince Mindao of Ji'nan
(濟南閔悼王), was briefly an emperor of the Northern Qi.
He was the oldest son of the first emperor, Emperor Wenxuan
(Gao Yang), and he became emperor after Emperor Wenxuan's death in 559.
However, in his young age, the officials fought over power, and in 560, Emperor Fei's uncle Gao Yan the Prince of Changshan killed the prime minister Yang Yin and took over power, soon deposing Emperor Fei and taking the throne himself as Emperor Xiaozhao.
In 561, fearful of prophecies that Emperor Fei would return to the throne, Emperor Xiaozhao had him put to death.
Emperor Wenxuan of Northern Qi
Emperor Wenxuan of (Northern) Qi ((北)齊文宣帝) (526–559), personal name Gao Yang
(高洋, Wade–
Giles: Kao Yang), courtesy name Zijin (子進), Xianbei name Hounigan (侯尼干)
, was the first emperor of the Northern Qi.
He was the second son of Eastern Wei's paramount general Gao Huan, and the death of his brother and Gao Huan's designated successor Gao Cheng in 549 became the regent of Eastern Wei.
In 550, he forced Emperor Xiaojing of Eastern Wei to yield the throne to him, ending Eastern Wei and starting Northern Qi.
Early in Emperor Wenxuan's reign, he was known for attentiveness to military matters, and the strength of the Northern Qi military was at its prime.
He also tried to equalize the tax burden and reduce corruption by offering officials sufficient salary.
He entrusted most governmental matters to the capable Yang Yin, and for a while, the government was effective, and the military was strong.
In his later years, Emperor Wenxuan suffered from alcoholism and possibly insanity.
Chinese historical annals recorded his bloody rages, nevertheless his reign, with assistance from his Chinese advisers, was considered well-administered and effective.
Gao Shaoyi
Gao Shaoyi( 高紹義), often known by his princely title of Prince of Fanyang( 范陽王), was an imperial prince of the Chinese dynasty Northern Qi, who claimed the Northern Qi throne in exile under the protection of Tujue after rival Northern Zhou seized nearly all of Northern Qi territory and captured the emperors, Gao Shaoyi's cousin Gao Wei and Gao Wei's son Gao Heng in 577.
In 580, Tujue, after negotiating a peace treaty with Northern Zhou, turned Gao Shaoyi over to Northern Zhou, and he was exiled to modern Sichuan, ending his claim on the Northern Qi imperial title.
Most traditional historians do not consider Gao Shaoyi a true emperor of Northern Qi.
Emperor Xuan of Chen
Emperor Xuan of Chen( 陳宣帝)( 530–582), personal name Chen Xu( 陳頊), courtesy name Shaoshi( 紹世), nickname Shili( 師利), was an emperor of the Chen dynasty of China.
He seized the throne from his nephew Emperor Fei in 569 and subsequently ruled the state for 13 years.
He was considered to be a capable and diligent ruler, who at one point militarily expanded at the expense of Northern Qi.
After Northern Qi fell to Northern Zhou in 577, however, Chen was cornered, and soon lost the gains it had previously made against Northern Qi. Emperor Xuan died in 582, leaving the state in the hands of his incompetent son Chen Shubao, and by 589, Chen would be destroyed by Northern Zhou's successor state Sui dynasty.

Question: Who is Emperor Fei Of Northern Qi's paternal grandfather?
Answer: Gao Huan