1. Kosiya.– The name of a brahmin clan (gotta). In the Vinaya Pācittiya it is given as one of the lower clans. (Vin.iv.8; but it is also Sakka’s clan, and is therefore generally regarded as a high one; see e.g., Thag.415; ThagA.i.452).
Among those mentioned as belonging to this clan are the brahmin Kevaṭṭa (J.vi.418 f), the brahmin who was the father of Soṇa Kumāra (the Bodhisatta) (J.v.319 ﬀ), Bhaddā-
Kātiyāna’s father was a Kosiyan, but he married a woman of the Kātiyāna family (ThagA.i.452).
The Bhūridatta Jātaka (J.vi.181; Mtu.ii.49) mentions a sage Kosiya, who taught Alambāyana the Nāga-
The Sālikedāra Jātaka (J.iv.278 f) mentions a brahmin of Sālindiya, called Kosiya-
The Kosiya Jātaka (J.i.465 f) speaks of a Kosiya-
The name means “belonging to the Kusika family.” It is once used of Indra in the Ṛg Veda, in what exact sense is not known. Rhys Davids suggests (Dial.ii.296 f; see also Dvy.632; Mtu.iii.200, 202, 315, 403) that perhaps we have here a survival from the time when Indra was only the god of a Kusika clan.
The word Kosiya (e.g., J.ii.208) means “Owl” and is probably one of the several clan names which are also names of animals (cf. Vaccha).
3. Kosiya Thera.– An Arahant. He belonged to a brahmin family in Magadha and was called by his clan-
He is probably identical with Ucchukandika of the Apadāna. Ap.ii.393.