Question: Carloman of Bavaria was the eldest grandson of what descendant of Charlemagne?

Context articles: Miangul Adnan Aurangzeb
Louis the German
Carloman I
Shua Ullah Behai
Prince Nobuhiko Higashikuni
Carloman of Bavaria
Pepin the Hunchback
Carloman (mayor of the palace)
Henry Ford II
Drogo (mayor of the palace)

Miangul Adnan Aurangzeb is an engineer, former member of Parliament MNA and the current head of the former princely family which once ruled Swat princely state.
 He is the eldest son of Miangul Aurangzeb and the eldest grandson of Miangul Jahan Zeb (the last ruler)
Louis (also Ludwig or Lewis) "the German" (c. 802-876), also known as Louis II, was the first king of East Francia.
 Grandson of emperor Charlemagne and the third son of emperor of Francia, Louis the Pious and his first wife, Ermengarde of Hesbaye, he received the appellation "Germanicus" shortly after his death in recognition of the fact that the bulk of his kingdom was in the former Germania.
Carloman I, also "Karlmann" (28 June 751 – 4 December 771) was king of the Franks from 768 until his death in 771.
 He was the second surviving son of Pepin the Short and Bertrada of Laon and was a younger brother of Charlemagne.
 No one knows who killed him.
 Carloman is mainly regarded by historians as Charlemagne's first steps towards acquiring the Holy Roman Empire, as his death allowed Charlemagne to take all of Francia and begin his expansion into other kingdoms.
Shua'u’llah Behai (1878 - July 3,1950), also known in the Baha’i tradition as Mirza Shua'u’llah, was the son of Mírzá Muhammad `Alí, son of Baha’u'llah.
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 Shua'u’llah Behai was the eldest grandson of Bahá'u'lláh, the founder-prophet of the Bahá'í Faith, and the eldest son of Mírzá Muhammad `Alí, whom Bahá'u'lláh named Ghusn-i-Akbar, meaning "Greater Branch."
 Shua'u’llah Behai was fluent in English and is the only known descendant of the Baha’i prophet to have become an American citizen.
 Shua'u’llah Behai was born in Qasr al-Mazra'a, ("Palace of Mazra'a”) Acre District, Palestine, and grew to maturity under the shadow of the Great Baha’u’llah.
Prince Nobuhiko Higashikuni (b. 東久邇 信彦; 10 March 1945）is a Japanese aristocrat.
 The eldest grandson of Emperor Hirohito, he is the eldest son of Shigeko, Princess Teru (the eldest daughter of Emperor Hirohito, and eldest sister of present Emperor Akihito) and Prince Morihiro Higashikuni, a grandson of Emperor Meiji.
 He is nephew of reigning Emperor Akihito.
Carloman (German: "Karlmann" , Latin: "Karlomannus" ; c. 830 – 22 March 880), was a Frankish king of the Carolingian dynasty.
 He was the eldest son of Louis the German, king of East Francia, and Hemma, daughter of a Bavarian count.
 His father appointed him margrave of Pannonia in 856, and upon his father's death in 876 he became King of Bavaria.
 He was appointed by King Louis II of Italy as his successor, but the Kingdom of Italy was taken by his uncle Charles the Bald in 875.
 Carloman only conquered it in 877.
 In 879 he was incapacitated, perhaps by a stroke, and abdicated Bavaria to Louis the Younger and Italy to Charles the Fat.
Pepin, or Pippin, the Hunchback (French: Pépin le Bossu, German: Pippin der Buckelige; c. 769 – 811) was the eldest son of Charlemagne.
 Born to the Frankish noblewoman Himiltrude, Pepin probably developed kyphosis after birth, leading early medieval historians to give him the epithet "hunchback".
 He lived with his father's court even after Charlemagne dismissed his mother and took another wife, Hildegard.
 Around 781, Pepin's half brother Carloman was rechristened as "Pepin of Italy"—a step that may have signaled Charlemagne's decision to disinherit the elder Pepin, for a variety of possible reasons.
 In 792, Pepin the Hunchback revolted against his father with a group of leading Frankish nobles, but the plot was discovered and put down before the conspiracy could put it into action.
 Charlemagne commuted Pepin's death sentence, having him tonsured and exiled to the monastery of Prüm instead.
 Since his death in 811, Pepin has been the subject of numerous works of historical fiction.
Carloman (between 706 and 716 – 17 August 754) was the eldest son of Charles Martel, "majordomo" or mayor of the palace and duke of the Franks, and his wife Chrotrud of Treves.
 On Charles's death (741), Carloman and his brother Pepin the Short succeeded to their father's legal positions, Carloman in Austrasia, and Pepin in Neustria.
 He was a member of the family later called the Carolingians and it can be argued that he was instrumental in consolidating their power at the expense of the ruling Merovingian kings of the Franks.
 He withdrew from public life in 747 to take up the monastic habit, "the first of a new type of saintly king," according to Norman Cantor, "more interested in religious devotion than royal power, who frequently appeared in the following three centuries and who was an indication of the growing impact of Christian piety on Germanic society".
Henry Ford II (September 4, 1917 – September 29, 1987), sometimes known as "HF2" or "Hank the Deuce", was the eldest son of Edsel Ford and eldest grandson of Henry Ford.
 He was president of the Ford Motor Company from 1945 to 1960, chairman and chief executive officer (CEO) and chairman for several months thereafter.
 Notably, under the leadership of Henry Ford II, Ford Motor Company became a publicly traded corporation in 1956.
 From 1943 to 1950, he also served as president of the Ford Foundation.
Drogo was the eldest son of Carloman, mayor of the palace of Austrasia.
 He was born before Carloman came to power in 741.
 In 747 Carloman went on a pilgrimage to Rome, leaving his sons under the guardianship of his uncle Pepin the Short and the king, Childeric III.
 Drogo, the eldest, had probably already reached his majority and may have been left behind as mayor of the palace by his father.
 Drogo's position was strong at this point and he held a church synod in 747 or 748 competing with a simultaneous synod held by Pepin.
 The great reformer and apostle to the Germans, Boniface, was unsure of which one to attend.