Kodhamanar

Kōthamanār (Tamil: கோதமனார்) was a poet of the Sangam period, to whom 2 verses of the Sangam literature have been attributed, including verse 15 of the Tiruvalluva Maalai.

Contribution to the Sangam literature
Kodhamanar has written a sole Sangam verse, namely, verse 366 of the Purananuru, apart from verse 15 of the Tiruvalluva Maalai.

Views on Valluvar and the Kural
Kodhamanar opines about Valluvar and the Kural text thus: The Brahmans preserve the four Vēdas orally, and never commit them to writing, because if read by all they would be less valued; but the Cural of Valluvar, though committed to writing and read by all, would nevertheless not lose its value. [Emphasis in original]