Alexios I, full name Alexios Komnénosz, in Hungarian Elek I (Greek: Ἀλέξιος Α' Κομνηνός), was born in Constantinople in 1048 and died there on August 15, 1118. He was the emperor of the Byzantine Empire and ruled from April 4, 1081 until his death. Alexios was the actual founder of the Komnenos dynasty, as III. He came to the throne by overthrowing Nikéhoros. Alexios faced the Normans' attacks during the Norman War, but managed to beat them back. In addition, he also fought against the Pechenegs, Slavs and Kuns. At the call of Alexios, the First Crusade was launched, the goal of which was to liberate the Holy Land. Although he made an alliance with the Crusaders, their relationship was not always smooth. During his rule, he introduced the pronoia and kharistika systems, which played an important role in the feudal estate policy. Alexios gave special rights to the Italian merchant cities, which contributed to the economic development of the empire. I. Alexios successfully stabilized the Byzantine Empire and contributed to its reconstruction after a long period of decline. He married Eirene Dukasztól when he took power and had many children: Anna Comné, wife of Brüennios Niképhoros the Younger, writer of Alexias; Maria Komnén, wife of Niképhoros Euphorbénos Katakalon (before her, Georgios Gabrasz's betrothed). II. (Szép) Byzantine emperor Ioannes; Sebastocrator Andronikos Komnenos; Sebastocrator Isaakios Komnenos; Eudokia of Komnenos, wife of Michael Iasites; Theodora of Komnenos, wife of Konstantinos Kurkites, then Konstantinos Angelos, through the latter II. Isaakios and III. Grandmother of Alexios; Manuel Komnenos, probably died as a small child; Zoé Komnenos, probably died as a small child.

Alexios Komnenos I was the emperor of Byzantium between 1081 and 1118. During his reign, the Byzantine Empire faced great economic difficulties. This also affected coinage and the quality of gold and silver coins decreased. Changing coinage policies and the low weight of metals led to inflation. One of the most well-known coinage changes was the introduction of a gold coin called the "Histamenon", which appeared at the beginning of the reign of Alexios I Komnenos. One of the characteristics of the gold coin was the inscription "IC-XC", which contains the Greek abbreviations of Christ's name. The quality and weight of the silver coins further decreased during his reign. Alexios was forced to mint new coins, which had a lower silver content, in order to be able to cover public finances. During the minting of the Byzantine Empire, Alexios and his son, II. Emperor John's portraits on the coins, which also serves to legitimize the ruler and the dynasty. I. During the reign of Alexios Komnenos, the minting took place under difficult economic conditions, and coins of varying quality and weight appeared during the period.