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In page Montgolfier brothers:

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Joseph-Michel was the 12th child. Described as a maverick and dreamer, he was impractical in terms of business and personal affairs. Étienne was the 15th child, had a much more even and businesslike temperament and was sent to Paris to train as an architect. After the sudden and unexpected death of Raymond in 1772, he was recalled to Annonay to run the family business. In the subsequent 10 years, Étienne applied his talent for technical innovation to the family business of paper making, which then as now was a high-tech industry. He succeeded in incorporating the latest Dutch innovations of the day into the family mills.[citation needed]