70 And at last holy Dionysius requested in his prayers, that he might end his life in exile, for fear that he might, if he returned home, find the minds of the people or the clergy disturbed through the teaching or practice of the unbelievers, and he obtained this favour, so that he bore with him the peace of the Lord with a quiet mind. Thus as holy Eusebius first raised the standard of confessorship, so blessed Dionysius in his exile gave up his life with honour higher even than martyrs.
Source: Letters (New Advent)