Speuy was born at Brielle. From 1595 he was organist of the Grote Kerk and Augustijnen Kerk in Dordrecht. In 1610 he composed De Psalmen Davids, a book of bicinia for the Genevan Psalter, and the first published work in the Netherlands for a keyboard instrument. He died in Dordrecht.
- W. Apel, The History of Keyboard Music to 1700, Indiana University Press, Bloomington & Indianapolis, 1967, pp. 338–339