Irenaeus will tell us more concerning him, his visit to Rome, his rebuke of Marcion, and inciden- tal anecdotes, all which are instructive. The expression which he applied to Marcion is found in this Epistle. Other facts of interest are found in the Martyrdom, which follows in these pages. His death, in extreme old age under the first of the Antonines, has been variously dated ; but we may accept the date we have given, as rendered probable by that of the Paschal question, which he so lovingly settled with Anicetus, Bishop of Rome.