Abdallah I was the Sultan of Anjouan island (in the Comoros Islands) two times: 1782-1788 and 1792–1796.Anjouan dans l'histoire. Institut national des langues et civilisations orientales, 2000
In 1788, he abdicated in favor of his granddaughter Halima.Anjouan dans l'histoire. Institut national des langues et civilisations orientales, 2000
He ruled a second time from 1792 to 1796.
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