Irenaeus was born in 130.

Irenaeus died in 202.

Edward Irenaeus Prime-Stevenson died in 1942.

There are over a dozen saints named Irenaeus. If you are referring to Saint Irenaeus of Sirmium, he was beheaded in the year 304. Saint Irenaeus of Lyons was martyred in the year 202. The method of his death is unknown.

Irenaeus was an early Christian theologian who lived in the 2nd century. He is known for his defense of orthodox Christianity against various heresies, particularly Gnosticism. Irenaeus emphasized the importance of apostolic tradition and the unity of the Church in combating false teachings.