The "Bibliothèque Royale" in Brussels contains the manuscript of Father Donatus Mooney's report on the Irish Province of the Franciscans compiled in 1617/1618 in which he notes that the place "is called 'Buttyfanie' and, in Irish, 'Kilnamullagh' or 'Killnamallagh'". Philip O'Sullivan Beare in his "Historiae Catholicae Iberniae", published in Spain in 1620, gives the name 'Killnamollacham' for the town and translates it into Latin as 'Ecclesia Tumulorum'. The 1st Duke of Ormonde refers to "Buttiphante" in a letter of January 1684 (Carte Manuscripts, Bodleian, 161, f. 47v), while Sir John Percival, progenitor of the Earls of Egmont, recorderd in his diary for the 16 March 1686 that the troopers "being att Buttevant Fair this day took Will Tirry and his wife and brought them hither and I examined them".