On Kimon see already kappa 1620 (and again kappa 1622).
[1] (Already at alpha 3563, and again omicron 717.) Although the common historical tradition does not associate Kimon's alleged incest with Elpinike (cf. Plutarch, Kimon 4) with his ostracism, which occurred in 461 BCE, an ostrakon is inscribed with the words "let Kimon, son of Miltiades, take Elpinike and get out". See on this S. Hornblower in OCD(4) s.v. Cimon [p.318], and more fully P. Siewert, Ostrakismos-Testimonien 1 (Stuttgart 2002) 92-93.
[2] A manual for inspecting horses, evidently. On Kimon (and his family) and the Athenian cavalry see G.R. Bugh, The Horsemen of Athens (Princeton 1988) index s.v.; I.G. Spence, The Cavalry of Classical Greece (Oxford 1993) index s.v. One must nevertheless suspect, with Pearson (see Adler's apparatus), that the Suda here (and already at alpha 4739) has confused Kimon with another C5 Athenian, and the man claimed by Pliny the Elder as the first writer on horsemanship: *Simon* (on whom see Xenophon, Cavalry Commander 1.1; Bugh, op.cit. 91 with n.35; and tau 987).