Leo IV

Papal leadership began in 847. Led the Catholic Church during a tumultuous period characterized by invasions and political instability. Undertook significant efforts to reinforce the defenses of Rome against the Saracens, notably enhancing its fortifications. Initiated the construction of the new walls of the city, known as the Leonine Wall, which provided greater security. Presided over important ecclesiastical decisions and maintained the church's influence despite external threats. Died on July 17, 855.

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Lothair I

Born in 795, this Carolingian emperor ruled over a vast territory in the 9th century. As the eldest son of Louis the Pious, inheritance included parts of the Frankish Empire. The most significant achievement was the Treaty of Verdun in 843, which divided the empire among Lothair and his brothers. This treaty is often cited as a pivotal moment in European history, laying the groundwork for modern France and Germany. Lothair's reign saw a focus on maintaining control over his territories amidst conflicts with local nobles and external threats.

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Theoktistos

A prominent Byzantine courtier, held high positions within the imperial administration during the 9th century. Played a significant role as a minister under Emperors Michael III and Basil I. Contributed to the expansion and consolidation of the Byzantine Empire during a period of military and political challenges. Instrumental in maintaining the stability of the state and supporting various ecclesiastical and administrative reforms.

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Drogo of Metz

Born in 801, served as a bishop in the Frankish kingdom. Played a significant role in the episcopal governance and administration of religious affairs. Contributed to the regional consolidation of ecclesiastical authority during the Carolingian era. Engaged in various synods and councils, which addressed both theological issues and church governance. Passed away in 855.

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