In the spring of 839, Louis the German invaded Swabia, Pepin II and his Gascon subjects fought all the way to the Loire, and the Danes returned to ravage the Frisian coast ( sacking Dorstad for a second time ).

The following year Pepin fulfilled his promise to the pope and retrieved the Exarchate of Ravenna, recently fallen to the Lombards, and returned it to the Papacy.

After a seven year absence, Pepin returned to the House of Commons in the 1979 election.

In 844 Charles the Bald returned to Aquitaine with the objective of forcing Pepin II to submit and conquering Toulouse.

The Emperor Louis the Pious, knowing of the Muslim raid, ordered his son Pepin I of Aquitaine and the counts Hugh of Tours and Matfrid of Orléans to recruit an army, but the recruitment was slow and by the time it was formed, Abu Marwan and his army had returned to Muslim territory.

* 841 – In the Battle of Fontenay-en-Puisaye, forces led by Charles the Bald and Louis the German defeat the armies of Lothair I of Italy and Pepin II of Aquitaine.

In 815, he had already given his two eldest sons a share in the government, when he had sent his elder sons Lothair and Pepin to govern Bavaria and Aquitaine respectively, though without the royal titles.

* Pepin was proclaimed King of Aquitaine, his territory including Gascony, the march around Toulouse, and the counties of Carcassonne, Autun, Avallon and Nevers.

In 830, at Wala's insistence that Bernard of Septimania was plotting against him, Pepin of Aquitaine led an army of Gascons, with the support of the Neustrian magnates, all the way to Paris.

Then Lothair finally set out with a large Lombard army, but Louis had promised his sons Louis the German and Pepin of Aquitaine greater shares of the inheritance, prompting them to shift loyalties in favour of their father.

Immediately, fearing that Pepin would be stirred up to revolt by his nobles and desiring to reform his morals, Louis the Pious summoned all his forces to meet in Aquitaine in preparation of an uprising, but Louis the German garnered an army of Slav allies and conquered Swabia before the emperor could react.

At Jonac, he declared Charles king of Aquitaine and deprived Pepin ( he was less harsh with the younger Louis ), restoring the whole rest of the empire to Lothair, not yet involved in the civil war.

When Pepin died in 838, Louis declared Charles the new king of Aquitaine.

* Pepin ( 797 – 838 ), king of Aquitaine

Over time, however, Papal dependence on the Holy Roman Emperor was loosened through the quarrels of Louis the Pious and his sons, the future emperor Lothair I, Pepin I of Aquitaine and Louis the German.

After expelling the Muslims from Narbonne in 759 and driving their forces back over the Pyrenees, the Carolingian king Pepin the Short conquered Aquitaine in a ruthless eight year war.

When Louis the Pious died in 840, his eldest son, Lothair I, claimed overlordship over his brothers ' kingdoms and supported the claim of his nephew Pepin II as king of Aquitaine, a large province in western France.

Pepin II was granted the kingdom of Aquitaine, but only under the authority of Charles.

* Pepin I of Aquitaine, King of Aquitaine

* Pepin I of Aquitaine and Louis the German revolt against Louis the Pious, Emperor of the Franks.

* Pepin I of Aquitaine, son of Louis the Pious, King of Aquitaine

In 824, the 3rd Battle of Roncesvaux took place, where counts Aeblus and Aznar, Frankish vassals from the Duchy of Vasconia sent by the new King of Aquitaine Pepin, were captured by the joint forces of Iñigo Arista and the Banu Qasi.

After the 843 Treaty of Verdun, the defeat of Pepin II and the death of Charles the Bald, the Kingdom of Aquitaine ( subsumed in West Francia ) ceased to have any relevance and the title of King of Aquitaine took on a nominal value.

His involvement in the first civil war of his father's reign was limited, but in the second, his elder brothers, Lothair, then King of Italy, and Pepin, King of Aquitaine, induced him to invade Alamannia — which their father had given to their half-brother Charles — by promising to give him the land in the new partition they would make.

When the elder Louis died in 840, and Lothair claimed the whole Empire, Louis allied with the half-brother, Charles the Bald, and defeated Lothair and their nephew Pepin II of Aquitaine, son of Pepin, at the Battle of Fontenay in June 841.

But in the event, Charlemagne's other legitimate sons died – Pepin in 810 and Charles in 811 – and Louis alone remained to be crowned co-emperor with Charlemagne in 813.

* July 13 – In Minnesota, storms result in the Sea Wing disaster on Lake Pepin killing 98.

* Pepin the Short ( 714 – 768 ), king of the Franks since 751, dies ; he is succeeded by his sons Carloman ( eastern Franks ) and Charles, aka Charlemagne ( western Franks ).

* October 22 – Charles Martel ( b. 688 ), major domus ( i. e., Mayor of the Palace ) of the Franks ; succeeded by his son Pepin the Short ( 714 – 768 )

* April – Pippin of Italy, King of the Langobardians, son of Charlemagne, not to be confused with Pepin " The Short " of France ( born this year or 773 )

Pepin defeated the Lombards – taking control of northern Italy – and made a gift ( called the Donation of Pepin ) of the properties formerly constituting the Exarchate of Ravenna to the Pope.

* Carloman ( mayor of the palace ), the brother of Pepin the Short ( 716 – 754 )

Pepin ( also Peppin, Pipin, or Pippin ) of Landen ( c. 580 – 27 February 640 ), also called the Elder or the Old, was the Mayor of the Palace of Austrasia under the Merovingian king Dagobert I from 623 to 629.

Pepin ( also Pippin, Pipin, or Peppin ) of Herstal, or Heristal, ( 635 / 45 – 16 December 714 ) was the Mayor of the Palace of Austrasia from 680 to his death and of Neustria and Burgundy from 687 to 695.

* Shiloh Pepin ( 1999 – 2009 ), sirenomelia patient

* Pepin I, 623 – 629

* Pepin I, 639 – 640 ( again )

* Pepin II, 680 – 714

* Pepin III, 747 – 751

* Pepin of Heristal, 688 – 695

* Pepin the Short, 741 – 751