Romanus I Lecapenos (Ancient Greek: Ρωμανός Α΄ Λακαπηνός, Latin: Romanus I Lecapenus, 871 – Prote, June 15, 948) was an Armenian emperor of the Byzantine Empire (reigned from December 17, 920 to December 16, 944). He rose from commoner to fleet commander, then his daughter VII. By marrying Constantine, she first gained the rank of emperor and then emperor. During his reign, he did a lot to strengthen the empire both in the western, Bulgarian and eastern, Arab borderlands, creating the basis for the later great conquests. During the reign of Rómanosz Lekapenosz, he carried out a number of important reforms: He recognized that the aristocrats were constantly buying up small estates, which may threaten the stability of the state in the long term. Therefore, he took measures to preserve small estates, for example, he extended the right of pre-emption and introduced the obligation to return property. Rómanosz strengthened the empire both in the western, Bulgarian and eastern, Arab borderlands, creating the basis for later great conquests. Although he did not become famous for his religion, he introduced colorful elements into the Byzantine liturgy and bred passionate horses. Rómanosz Lekapénosz abdicated the throne in 944, and his successor, VII. Constantine took over. During his long life, Rómanosz did a lot to strengthen the Byzantine Empire, and his memory remained worthy in the history of the empire.

The coinage of Emperor Lekapenos Romanos I between 920-944 was one of the most significant periods of Byzantine coinage. During this period, the emperor introduced many new types of money, which significantly improved the stability and reliability of the Byzantine monetary system. Romanos primarily focused on the currency of the nomadic tribes, the sovereign. Sovereignty was a silver coin that formed the basis of the Byzantine monetary system. Romanos introduced several new types of sovereignty, among which was a golden sovereignty. The gold sovereign was the first gold coin of the Byzantine monetary system and significantly increased the stability of the Byzantine economy. Romanos' coinage also introduced several new copper coins designed for mass consumption. These copper coins significantly improved the accessibility of the Byzantine monetary system for the lower classes. The reign of Romanos was one of the most significant periods of the Byzantine monetary system.