Proper noun
Sprenger (plural Sprengers)
A surname.
Three years later in 1487, Kramer and Sprenger published the notorious Malleus Maleficarum (the 'Hammer against the Witches') which, because of the newly invented printing presses, enjoyed a wide readership. Source: Internet
It allegedly gave full papal approval for the Inquisition to prosecute what was deemed to be witchcraft in general and for Kramer and Sprenger specifically. Source: Internet
Scholars have debated how much Sprenger contributed to the work. Source: Internet