Cleopatra's grandson Ptolemy inherited Mauretania from his father Juba, and Caligula summoned him to Rome and had him killed

Cleopatra VII's daughter Cleopatra Selene married Juba II, and the couple received the kingdom of Mauretania. Their son Ptolemy became co-ruler by AD 21 and sole king when Juba died in AD 23 or 24. He helped the Roman commander Dolabella defeat the rebel Tacfarinas, and the Senate honoured him as a friend and ally of the Roman people, sending a curule chair and an embroidered toga. Mauretania exported grain, olive oil, fish sauce and purple dye, and Ptolemy was rich. Through his mother he was a cousin of the emperor Gaius, known as Caligula. Suetonius writes that Caligula invited him from his kingdom, received him with honour, then had him executed because his purple cloak drew the crowd's admiration when he entered the theatre at a gladiatorial show. Cassius Dio says Caligula killed him on learning he was wealthy. Modern historians suggest Caligula saw him as a political threat, possibly linked to the conspiracy of Gaetulicus. Mauretanians loyal to him rose under Aedemon. Claudius put the revolt down and divided the kingdom into two Roman provinces, Mauretania Tingitana and Mauretania Caesariensis. The tomb built for his parents stands near Tipaza in Algeria.