Johannes Christoffel Jan Mastenbroek (5 July 1902 – 23 May 1978) was a Dutch football manager who coached the Dutch East Indies national team at the 1938 FIFA World Cup.Copa do Mundo da FIFA França 1938
Mastenbroek was born and raised in Dordrecht, son of Klaas Mastenbroek, a tailor, and Goverdina Rackwitsz. In 1924, he married Johanna van den Bovenkamp in Hengelo, at which time he was a schoolteacher.Mastenbroek's wedding at wiewaswie.nl
He was the chairman of the Nederlandsch-Indische Voetbal Unie (Dutch East Indies Football Union) and the vice-president of the Dutch East Indies Olympic Committee.
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