Pope St Pius X's Pascendi dominici gregis, denouncing modernism as ‘the synthesis of all heresies’, was promulgated in September 1907. The (false) suspicion that its intended target was Cardinal Newman – a suggestion promoted by George Tyrrell, among others – sparked a protracted controversy in the British secular and religious press, with modernists and anti-modernists both fighting to claim Newman. After narrating the early skirmishes of this debate, this paper explores the controversy in light of two main themes: popular views regarding Newman's standing and esteem in the eyes of the curia and magisterium; and his central, symbolic role in the construction of English Catholicism. Both, I argue, fanned the flames engulfing the letters pages of the Times. Particular attention is also given to the key (and perhaps surprising) role of another great English Cardinal in defending Blessed John Henry: St Pius’‘uncompromising ultramontane’ Secretary of State, Rafael Merry del Val.