Lewis & Short

Pĕlăgŏnes, um, m., = Πελαγόνες,

  1. I. a people of Macedonia, the later Pœonians, Liv. 45, 30.
    Hence,
  2. II. Pĕlăgŏnĭa, ae, f., a district and city of the Pelagonians, in the north of Macedonia, Liv. 26, 25; 31, 28; 39; 45, 29.