Q. Tullius Cicero, the brother of the orator, was born probably B.C. 102. He was aedile in 65 (_ad Att._ i. 4, 1); praetor in 62, when he tried the case of Archias; propraetor of Asia 61-58 (_ad Q.F._ i. 1, 2). He acted as _legatus_ of Pompey in Sardinia B.C. 56 (_pro Scauro_, 39); of Caesar in Gaul, taking part in the second invasion of Britain (Caes. _B.G._ v.); and of his brother in Cilicia (_ad Fam._ xv. 4, 8). At the outbreak of the civil war he was with Marcus at Formiae and Capua; but after the death of Pompey there was a breach between them. Being proscribed by the triumvirs he took flight, but was betrayed by his slaves and put to death, B.C. 43 (Plut. _Cic._ 47). His wife was Pomponia, the sister of Atticus. For the benefit of M. Cicero in his candidature for the consulship, B.C. 64, Quintus wrote the _Commentariolum Petitionis_ (the title in § 58) or _De Petitione Consulatus_. It is in the form of a letter, and is headed in the best MSS. 'Q. M. Fratri S. D.' Quintus writes with special reference to his brother's circumstances, but most of the rules which he lays down are of general application. The authenticity of this treatise has been called in question by Eussner, who ascribes it to a clever imitator, partly on the ground of coincidences of expression with Cicero's speech _in Toga Candida_; but his arguments are refuted by Prof. Tyrrell (_Cicero's Correspondence_, i. pp. 110-121). There are also extant three letters to Tiro and one to M. Cicero. Quintus' poetry is now represented only by twenty hexameters on the signs of the zodiac; but he wrote an epic poem, _Annales_ (_ad Att._ ii. 16, 4 [Quintus] 'ita remittit ut me roget ut annales suos emendem et edam'), and composed tragedies with great rapidity (_ad Q.F._ iii. 6, 7, 'quattuor tragoedias xvi. diebus absolvisse cum scribas, tu quidquam ab alio mutuaris?'). His admiration for Sophocles and Euripides appears in _De Fin._ v. 3; _ad Fam._ xvi. 8, 2. TIRO. M. Tullius Tiro, the freedman of Cicero, who had a high opinion of his worth and ability (_ad Fam._ xvi. 4, 3; _ad Att._ vii. 5, 2), wrote (1) a biography of his patron: Ascon. p. 49, 'ut legimus apud Tironem libertum Ciceronis in libro iiii. de vita eius.' (2) Editions of Cicero's speeches and letters: Gell. i. 7, 1, 'in oratione Ciceronis v. in Verrem, libro spectatae fidei, Tironiana cura atque disciplina facto.' (See also p. 85.) (3) A collection of Cicero's witticisms: Quint. vi. 3, 5, 'utinam libertus eius Tiro aut alius, quisquis fuit, qui iii. hac de re libros edidit, parcius dictorum numero indulsissent.' (4) Grammatical works, as πανδέκται, mentioned by Gell. xiii. 9, 2. For his system of shorthand, cf. Sueton. p. 136 R., 'Romae primus Tullius Tiro, Ciceronis libertus, commentatus est notas, sed tantum praepositionum.' T. POMPONIUS ATTICUS (B.C. 109-32).