Who attended Plotinus’s philosophical circle in Rome?

Plotinus’s philosophical circle in Rome was a cosmopolitan and informal group of friends and admirers rather than a formal academic institution. His circle included a diverse range of individuals, such as Roman senators, their wives, and widows, as well as men from the eastern half of the empire.12

Among those who held him in high regard were the emperor Gallienus and his wife, Salonina. His inner circle of closest friends and philosophical collaborators included:1

• Porphyry: His disciple, biographer, and the editor of his works.23
• Amelius Gentilianus: A philosopher from Tuscany who served as the senior member of the school and was Plotinus's closest collaborator.2
• Eustochius: Plotinus’s physician, who may have also produced an edition of his writings.2

Additionally, his circle included some Gnostics, though their presence eventually led Plotinus to organize a polemical campaign against their beliefs.2