Gaius Musonius Rufus, a Stoic philosopher active in the reigns of Nero until the reign of Trajan, is chiefly known today as the mentor of Epictetus (epsilon 2424). For more information see Miriam Griffin in OCD4 s.v. Musonius, and Lutz in the bibliography.
[1] This is the only authority for Capito.
[2] cf. Tacitus, Annales 14.59.
[3] Barrington Atlas map 42 grid B3; present-day Bolsena. Volsinii as Musonius' home town is only mentioned here, but a dedication to a descendant of Musonius was found on the site of Volsinii, CIL VI 537.
[4] Philostratus, Life of Apollonius of Tyana 4.46, included in Hense's editions (see bibliography) pp. 142ff.
[5] The tradition that Musonius was killed by Nero is also alluded to in kappa 2098 (Cornutus) and in Justin Martyr 2 Apology 8. In fact Musonius was only exiled by Nero, He survived until the Flavians, and is believed by scholars today to have lived, in toto, from ca. 30 to 90 or perhaps 100 CE.
[6] Scholars debate about whether Musonius really wrote anything for publication. The "letters" mentioned here could be the apparently spurious ones found in Philostratus. The "speeches" could refer to the notes of a certain Lucius, which were apparently the source for our surviving epitomes of Musonius' diatribes. These epitomes of speeches are well worth reading and include such interesting titles as That women too should study philosophy, Should daughters receive the same education as sons?, On Sexual Excess, and many more. See Lutz (in bibliography) 5ff.
[7] The emperor Julian: iota 437. What follows is from one of his Letters (no.30).
[8] The reading ba/reis in the Suda is clearly based on a bad manuscript tradition of Julian's Letter to Theodorus 16. Most mss of Julian read "He cared for Bara," but one ms was found in which the (doubtlessly correct) reading was Gyara, the island of Musonius' exile (cf. beta 114). It is unlikely that the gloss of "fortifications" in the Suda is due to its similarity to Middle Persian "vara," a stronghold.