Meaning of the Sanskrit Word: parthah

  pārthaḥ—Mahārāja Yudhiṣṭhira.    SB 3.1.20, SB 7.15.79
  pārthaḥ—Arjuna    Bg 1.26
  pārthaḥ—the son of Pṛthā    Bg 18.78
  pārthaḥ—Śrī Arjuna    SB 1.7.40
  pārthāḥ—the sons of Pṛthā    SB 1.10.11-12

Can't find any compound Sanskrit words containing parthah.