In 1610, however, during the famous trial against the witches of Zugarramurdi, the Inquisition Council deviated from its normal practice by confirming the death sentences of six witches found guilty of the crime of witchcraft. It seems that the inquisitors of Logrono, which in the meantime had become the seat of the Inquisition for Navarra and the Basque-speaking provinces, had let themselves be influenced by the French judges who were involved in a large-scale witch-hunt on the other side of the Pyrenees. The Spanish inquisitors had even received letters from the French judge, Pierre de Lancre, who did not for a moment doubt the reality of witchcraft (Lancre 1613, 143f; compare Henningsen 1980, 250f).
Not long afterwards, however, the Council realised that the burnings of 1610 had been a serious mistake, and returned to its old policy mentioned above. After the sad affair of Logrono, therefore, no witch was burned by the Spanish Inquisition, in Spain, or in the Spanish dependencies in Italy and the New World. This did not mean, however, that a stop had been put to witchcraft and sorcery trials; on the contrary, their numbers had increased although the death penalty had been abandoned. Thus, during the ninety years from 1610 to 1700, I estimate that the Spanish Inquisition held more than five thousand witch trials.
Gustav Henningsen, “The Witches’ Flying and the Spanish Inquisitors, or How to Explain (Away) the Impossible ,” (2009)