
Annales Laurissenses minores or ALM is the Latin name of a medieval, historiographic text from the abbey at Lorsch near Worms in Germany. In many German texts, they are also called the Kleine Lorscher Frankenchronik, but in English may be referred to as the "Short chronicle of Lorsch" or "Lesser Annals of Lorsch".

The Annales Xantenses or Annals of Xanten are a series of annals written, probably at Lorsch for the period 832 to 852 and at Cologne for the period until 873. The Lorsch author is probably Gerward, a royal chaplain, but the continuator is unknown. For that period (832–873) they present an independent source to augment the other Reichsannalen.

Einhard was a Frankish scholar and courtier. Einhard was a dedicated servant of Charlemagne and his son Louis the Pious; his main work is a biography of Charlemagne, the Vita Karoli Magni, "one of the most precious literary bequests of the early Middle Ages."

George Hamartolos or Hamartolus was a monk at Constantinople under Michael III (842–867) and the author of a chronicle of some importance. Hamartolus is not his name but the epithet he gives to himself in the title of his work: "A compendious chronicle from various chroniclers and interpreters, gathered together and arranged by George, a sinner ". It is a common form among Byzantine monks. Krumbacher protests against the use of this epithet as a name and proposes the form Georgios Monachos.

Hilduin was Bishop of Paris, chaplain to Louis I, reforming Abbot of the Abbey of Saint-Denis and an author. He was one of the leading scholars and administrators of the Carolingian empire.

Hincmar, archbishop of Reims, was a Frankish jurist and theologian, as well as the friend, advisor and propagandist of Charles the Bald. He belonged to a noble family of northern Francia.
Johannes Hymonides, known as John the Deacon of Rome, was a deacon of the Roman Church. Few details are known of his life: after the death of St Nicholas I, he was briefly exiled from Rome at the behest of the emperor Louis II, but was recalled by Adrian II. Possessed of considerable learning, he was closely associated with Anastasius, Librarian of the Roman Church.

Nikephoros I or Nicephorus I was a Christian Byzantine writer and Ecumenical Patriarch of Constantinople from April 12, 806, to March 13, 815.

Thegan of Trier was a Frankish Roman Catholic prelate and the author of Gesta Hludowici imperatoris which is a principal source for the life of the Holy Roman Emperor Louis the Pious, the son and successor of Charlemagne.