This article considers responses to Habsburg persecution of Protestants in Hungary during the 1670s. Focusing on the Reformed church, it will first assess how long-established contacts with Reformed co-religionists in northwestern Europe came to provide support for Hungarians in the face of violent state repression. This will concentrate in particular on the trial and imprisonment of Protestant clergy after 1674 and on the liberation of one group of ministers in 1676, thanks to Dutch intervention. It will then consider the diverse ways in which Habsburg persecution of Hungarian Protestants was represented in the Dutch Republic, England, France, and in Hungary, and what this reveals about the international Reformed community toward the end of the confessional age. It will then assess the role of persistent but shifting memories of this era of martyrs and liberators in the later development of Hungarian Reformed identity.