Lewis & Short

Trĭŏpas, ae, m., = Τριόπας, a king of Thessaly, the father of Erisichthon, Hyg. Astr. 2, 14.
Hence,

  1. A. Trĭŏpēïus, ii, m., the son of Triopas, i. e. Erisichthon, Ov. M. 8, 751.
  2. B. Trĭŏpēïs, ĭdis, f., a granddaughter of Triopas and daughter of Erisichthon, i. e. Mestra, Ov. M. 8, 872.