Guy had become the Count and Duke of Lucca and Margrave of Tuscany after the death of his father Adalbert II in 815.

His mother Bertha had been his regent from his father's death until 916.

Guy kept court at Mantua around the year 920.

Marozia is a Roman noblewoman who has the title senatrix patricia Romanorum.

In 924 or 925, in order to counter the influence of Pope John X (whom the hostile chronicler Liutprand of Cremona alleges was one of Marozia’s lovers), Marozia subsequently marries his opponent Guy of Tuscany, who loves his beautiful wife as much as he loves power.

Together they attack Rome, arrest Pope John X in the Lateran, and jail him in the Castel Sant'Angelo.

Either Guy has him smothered with a pillow in 928 or he simply dies, perhaps from neglect or ill treatment.

Marozia seizes power in Rome in a coup d'état.

John’s successor, Leo VI, was born into Roman family, and his father was Christophorus, who had been Primicerius under Pope John VIII around the year 876.

Tradition has it that he was a member of the Sanguini family.

Just immediately prior to his election as pope, around June 928, Leo had been serving as the Cardinal-Priest of the church of Santa Susanna.

He is the choice of Marozia.

During his brief pontificate, Leo confirms the decisions of the Synod of Split.

He completes his predecessor’s investigations into the ecclesiastical situation in Dalmatia, and proceeds to give the pallium to John, Archbishop of Salona, and orders all the bishops of Dalmatia to obey him.

He also orders the Bishop of Nona and others to limit themselves to the extent of their dioceses.

Leo then issues a ban on castrati entering into a union of marriage.

He also issues an appeal for help against the Arab raiders who are threatening Rome.