Theophanes Continuatus records that "Romanus imperator" was 21 years old when he succeeded "patre suo Constantino Porphyrogenneto". Liudprand names Romanos as son of Constantine when recording his marriage to the daughter of Ugo King of Italy.
He was crowned co-emperor 6 Apr 945. He succeeded his father in 959 as Emperor ROMANOS II. He left the government entirely in the hands of Nikeforos Fokas, supreme commander of the army. Nikeforos Fokas captured Crete in 961, and Anazarbus and Marash in Germanicia, Asia Minor in 962. As recompense, he was crowned co-emperor.
Cedrenus records the death 15 Mar "indictione 6" of "Romanus imperator" aged 24 after ruling for three years, 4 months and 5 days, worn out by "luxuriosa et voluptatibus dedita vita", other said by poison. 1