Merten de Keyser

Merten de Keyser (born Martin Lempereur; died 1536) was a 16th-century French printer and publisher working mainly in Antwerp, who printed the first complete French and the first complete English Bible translations as well as a number of works by English Protestant authors.

Not much is known about his life. He married Françoise La Rouge, the daughter of the Paris printer Guillaume Le Rouge, whose workshop he took over on Le Rouge's death in 1517. When a series of condemnations of evangelical works and a ban on Bible translations were issued in Paris in 1525, he moved to Antwerp. In his Antwerp publications he adapted his name to the language of the publication (using Martinus Caesar in the Latin volumes, Merten de Keyser in the Dutch books, and Martyne Emperowr in the English works). He died in Antwerp in 1536. After his death, his widow continued to run the workshop.

De Keyser issued many works by the French humanist Jacques Lefèvre d'Étaples: his French Psalter (1525), his French Old Testament (1528), his French New Testament (1529, 1531, 1532, 1535) and his complete French Bible (1530 and 1534), the first French Bible ever in print. De Keyser published the second edition of Lefèvre's fivefold Psalter, the Quincuplex Psalterium, which contained the Psalms in five different Latin versions.

His Dutch publications included New Testaments (e.g. Dat nieuwe testament ons heeren Jesu Christi met alder neersticheyt oversien, ende verduytst in 1525), Psalters, partial biblical translations and other religious works. His printer's device is included in the second complete Dutch Bible, published by his colleague Willem Vorsterman in 1528 in Antwerp, hinting at some kind of co-operation between the two printers working in the same street.

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