A satire on a Catholic priest who converted to Protestantism, beg. Do theangamhaigh tráth me lán-lag traochta. From Maynooth M 58; this edition includes the bilingual English-Irish title, English and Latin notes by Mac Gearailt, Latin postscript, and bilingual Irish-English warrant omitted by R. Ó Foghludha (cf. Best¹, p. 212).