The Ingalkoyyu or Isawaghan people are a Northern Songhay ethnic group around In-Gall in Niger. They speak Tasawaq, a Northern Songhay dialect.Michael J. Rueck; Niels Christiansen. Northern Songhay languages in Mali and Niger, a sociolinguistic survey. Summer Institute of Linguistics (1999).Catherine Taine-Cheikh. [Les langues parlées au sud Sahara et au nord Sahel http://hal.archives-ouvertes.fr/halshs-00456346/]. De l'Atlantique à l'Ennedi (Catalogue de l'exposition « Sahara-Sahel »), Centre Culturel Français d'Abidjan (Ed.) (1989) 155–173

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