Hard, pp. 416, 729; Grimal, s.v. Cepheus 1, Tripp, s.v. Cepheus 2, and Parada, s.v. Cepheus 2, all treat these two as the same, while Smith, s.vv. Cepheus 2, Cepheus 3, treats them as distinct.
Grimal, s.v. Cepheus 1; Parada, s.v. Cepheus 2; Apollodorus, 1.8.2. Apollodorus mentions "Ancaeus and Cepheus, sons of Lycurgus, from Arcadia" as being among those heroes who participated in the Calydonian boar hunt, which must represent either a different Cepheus (e.g. Smith, s.v. Cepheus 3, as distinct from s.v. Cepheus 2) or a different genealogical tradition (e.g. Parada, s.v. Cepheus 2).
Hard, pp. 416, 729; Grimal, s.v. Cepheus 1, Tripp, s.v. Cepheus 2, and Parada, s.v. Cepheus 2, all treat these two as the same, while Smith, s.vv. Cepheus 2, Cepheus 3, treats them as distinct.
Grimal, s.v. Cepheus 1; Parada, s.v. Cepheus 2; Apollodorus, 1.8.2. Apollodorus mentions "Ancaeus and Cepheus, sons of Lycurgus, from Arcadia" as being among those heroes who participated in the Calydonian boar hunt, which must represent either a different Cepheus (e.g. Smith, s.v. Cepheus 3, as distinct from s.v. Cepheus 2) or a different genealogical tradition (e.g. Parada, s.v. Cepheus 2).