Marcus Antonius Antyllus (47 BC – 23 August 30 BC) was a son of the Roman Triumvir Marc Antony. He was also called Antyllus, a nickname given to him by his father meaning "the Archer". Despite his three children by Cleopatra, Marc Antony designated Antyllus as his official heir, a requirement under Roman law and a designation that probably contributed to his execution at age 17 by Octavian (later the Emperor Augustus). Name His nickname Antyllus means "the archer" in Greek, but there has been some speculation among historians that this name is actually a corruption of Antonillus which means "little Antonius". Family Antyllus was the eldest child of Mark Antony by his third wife, Fulvia, who was a great-great granddaughter of Scipio Africanus. He had one full sibling, his younger brother Iullus Antonius. His maternal half siblings were Claudia, Publius Claudius Pulcher by his mother's first husband Clodius, and another half-brother named Gaius Scribonius Curio by his mother's second husband Curio. His paternal half siblings were Antonia Prima (by Antonia Hybrida Minor), Antonia the Elder and Antonia the Younger (by Octavia Minor), and Alexander Helios, Cleopatra Selene II, and Ptolemy Philadelphus (by Cleopatra VII). Biography Antyllus was born and raised in Rome. His mother, Fulvia, died in October 40 BC, from illness, while in political exile in Sicyon, Greece. His father remarried to Octavia Minor, the second elder sister to Octavian (future Roman Emperor Caesar Augustus) who was a member of the Second Triumvirate. In his younger years, he was betrothed to Octavian's daughter Julia the Elder. After the alliance between his father and Octavian ended, the engagement was broken off. Between 40 - 36 BC, he lived with his father, step mother and his siblings in his father's mansion, in Athens, Greece. After 36 BC, he accompanied his father as they left Greece and lived his remaining years in Alexandria, Egypt in the court of Queen Cleopatra VII of Egypt. His physician was a Greek man called Philotas. From Plutarch's account of Antony, clause 28, the historian gives a story of the character of Antyllus: For they had an association called The Inimitable Livers, and every day they feasted one another, making their expenditures of incredible profusion. At any rate, Philotas, the physician of Amphissa, used to tell my grandfather, Lamprias, that he was in Alexandria at the time, studying his profession, and that having got well acquainted