Licinius II

Licinius II or Licinius the Younger (full name: Valerius Licinianus Licinius) (approx. 315–326) was the son of Roman emperor Licinius. He nominally served as Caesar in the eastern empire from 317 to 324 AD while his father was Augustus. His mother was Licinius' wife Flavia Julia Constantia, who was also the half-sister of Constantine I.
After his defeat by Constantine at the Battle of Chrysopolis, Licinius the elder was initially spared and placed in captivity at Thessalonica. However, within a year Constantine seems to have regretted his leniency and the former Emperor was hanged.
The younger Licinius, who was Constantine's nephew, also fell victim to the emperor's suspicions and was killed, probably in the context of the execution of Crispus in 326.
Other reports relate that Licinius the younger was forced into slavery in the imperial textile factories in Africa, where he is noted in 336. However, the imperial rescript of 336 makes it clear that the "son of Licinianus" referred to was not Licinius II as it directs that he be reduced to the slave status of his birth. No son of Constantine's sister would have been referred to in this manner.