According to Roman historiography, Inguiomer or Ingomar was an influential chieftain of the Cherusci in the early 1st century AD. He was the brother of Segimer, father of Arminius. Inguiomer joined his nephew in the campaign against Germanicus in AD 15. He disagreed with the defensive strategy taken by Arminius and pursued the retreating army of Caecina across the moors, forfeiting certain victory and being wounded himself. In AD 1718, he joined Maroboduus in his war against Arminius.
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Source: Wikipedia