Page "Constantius II" Paragraph 3

In 351, as a consequence of the difficulty of managing the entire empire alone, Constantius elevated his cousin Constantius Gallus, the eldest surviving son of Constantius ' half-uncle, Julius Constantius, to the subordinate rank of Caesar, but had him executed three years later after receiving scathing reports of his cousin's violent and corrupt nature.

Shortly after in 355, Constantius promoted Gallus ' younger half-brother and Constantius ' last surviving cousin, Julian to the rank of Caesar.