For 10 points, name this rich man whose name is synonymous for a wealthy patron of the arts.
Cassius Dio relates a story in which this person, restrained by a crowd and unable to get to the emperor, flung a tablet  that read "Pray rise at last, executioner!" onto the emperor's lap, thus saving many people from being condemned. This  first Roman to install a warm swimming pool was also the first to devise shorthand writing, which he taught to many  through his freedman, Aquila. On the Esquiline Hill, this person erected the first Hellenistic-Persian gardens in Rome.  Lucius Varus Rufus introduced one of his man's protégés to him, and his many mentees included Plotius Tucca and  Domitius Marsus. He was the dedicatee of works by (*) Propertius, Horace, and Virgil, the foremost of the many poets that he  sponsored. For 10 points, name this rich man whose name is synonymous for a wealthy patron of the arts.
Cassius Dio relates a story in which this person, restrained by a crowd and unable to get to the emperor, flung a tablet  that read "Pray rise at last, executioner!"
Gaius Cilnius Maecenas