before the publication of the first Tridentine
1564, the Inquisition in Spain had grown
particularly aggressive in its local censorship,
publishing its own indexes of prohibited books at
Valencia in 1551 and at Valladolid in 1554 and 1559.
Further editions were printed at Madrid in 1583 and
1612, Seville in 1632, and again at Madrid in 1640
(reprinted in 1667), 1707, 1747, and 1790. Backed by
the strict enforcement of the Inquisition, the
Spanish indexes were typically larger and more
restrictive than the Tridentine Index and its
derivative Roman editions, focusing particular
attention on vernacular texts.