Gnaeus Pedanius Fuscus Salinator II

• From the Wikipedia page of his grandfather, Servianus:

For a long time, the emperor Hadrian had considered Servianus as his unofficial successor. As Hadrian's reign drew to a close, however, he changed his mind. Although the emperor certainly thought Servianus capable of ruling as an emperor after Hadrian's own death, Servianus, by now in his nineties, was clearly too old for the position. Hadrian's attentions turned to Servianus' grandson, Gnaeus Pedanius Fuscus Salinator II. Hadrian promoted the young Salinator, his great-nephew, gave him special status in his court, and groomed him as his heir. Servianus, who always cherished the idea that his youthful grandson would one day succeed his brother-in-law, was over-joyed.

However, in 136, Hadrian changed his mind and decided to adopt Lucius Aelius Caesar as his son and heir. Servianus and the younger Salinator were very angry at Hadrian and wanted to challenge him over the adoption. It is possible Salinator went so far as to attempt a coup against Hadrian in which Servianus was implicated. In order to avoid any potential conflict in the succession, Hadrian ordered the deaths of Salinator and Servianus.[4] Ironically, Aelius died before Hadrian in 138, leaving Hadrian to adopt Antoninus Pius.