Question: Roland (Frankish: "*Hrōþiland") was a Frankish military leader under Charlemagne, also known as who?

Context paragraphs:
Charles Martel Group: The Charles Martel Group (also known as the "Charles Martel Club") was a French far-right anti-Arab terrorist organization which operated in the 1970s and 1980s.  It was named after Charles Martel, the Frankish military leader who defeated invaders of the Umayyad Caliphate at the Battle of Tours in 732.

Pepin of Herstal: Pepin II (c. 635 – 16 December 714), commonly known as Pepin of Herstal, was a Frankish statesman and military leader who de facto ruled Francia as the Mayor of the Palace from 680 until his death.  He took the title Duke and Prince of the Franks upon his conquest of all the Frankish realms.

Charles Martel: Charles Martel (c. 686 – 22 October 741) was a Frankish statesman and military leader who as Duke and Prince of the Franks and Mayor of the Palace, was "de facto" ruler of Francia from 718 until his death.  The son of the Frankish statesman Pepin of Herstal and a noblewoman named Alpaida, Charles successfully asserted his claims to power as successor to his father as the power behind the throne in Frankish politics.  Continuing and building on his father's work, he restored centralized government in Francia and began the series of military campaigns that re-established the Franks as the undisputed masters of all Gaul.

Ansegisel: Ansegisel (also "Ansgise", "Ansegus", or "Anchises") (c. 602 or 610 – murdered before 679 or 662) was the son of Saint Arnulf, bishop of Metz, and his wife Doda.  He served King Sigbert III of Austrasia (634–656) as a duke (Latin "dux", a military leader) and "domesticus".  He was killed sometime before 679, slain in a feud by his enemy Gundewin.  Through his son Pepin, Ansegisel's descendants would eventually become Frankish kings and rule over the Carolingian Empire.

Widukind: Widukind, also known as Widuking or Wittekind, was a Germanic leader of the Saxons and the chief opponent of the Frankish king Charlemagne during the Saxon Wars from 777 to 785.  Charlemagne ultimately prevailed, organized Saxony as a Frankish province and ordered conversions of the pagan Saxons to Roman Catholicism.  In later times, Widukind became a symbol of Saxon independence and a figure of legend - the Codex Wittekindeus is said to have been owned by him.

Charlemagne: Charlemagne ( ) or Charles the Great (2 April 742 – 28 January 814), numbered Charles I, was King of the Franks from 768, King of the Lombards from 774 and Emperor of the Romans from 800.  He united much of Europe during the early Middle Ages.  He was the first recognised emperor in western Europe since the fall of the Western Roman Empire three centuries earlier.  The expanded Frankish state that Charlemagne founded is called the Carolingian Empire.

Historia Caroli Magni: Historia Caroli Magni or Historia Karoli Magni et Rotholandi ("History of the life of Charlemagne and Roland"), sometimes known as the Turpin Chronicle or the Pseudo-Turpin Chronicle, is a 12th-century Latin forged chronicle of legendary material about Charlemagne's alleged conquest of Spain.  It is also called "Book IV – The Conquests of Charlemagne" of the Codex Calixtinus (the oldest known manuscript of the text).  The chronicle states it was written by Charlemagne's contemporary Turpin, Archbishop of Reims, but it was found out as a medieval forgery.  The work was extremely popular, and served as a major source of material on Charlemagne in chronicles, fiction and iconography throughout Medieval Europe.

Charles Martel (disambiguation): Charles Martel (c. 688–741) was a Frankish military and political leader.

King of Italy: King of Italy (Latin: "Rex Italiae"; Italian: "Re d'Italia") was the title given to the ruler of the Kingdom of Italy after the fall of the Western Roman Empire.  The first to take the title was Odoacer, a "barbarian" military leader, in the late 5th century, followed by the Ostrogothic kings up to the mid-6th century.  With the Frankish conquest of Italy in the 8th century, the Carolingians assumed the title, which was maintained by subsequent Holy Roman Emperors throughout the Middle Ages.  The last Emperor to claim the title was Charles V in the 16th century.  During this period, the holders of the title were crowned with the Iron Crown of Lombardy.

Roland: Roland (Frankish: "*Hrōþiland") (died 15 August 778) was a Frankish military leader under Charlemagne who became one of the principal figures in the literary cycle known as the Matter of France.  The historical Roland was military governor of the Breton March, responsible for defending Francia's frontier against the Bretons.  His only historical attestation is in Einhard's "Vita Karoli Magni", which notes he was part of the Frankish rearguard killed by rebellious Basques in Iberia at the Battle of Roncevaux Pass.

Supporting paragraphs: Roland Charlemagne
Answer: Charles the Great