A little later in J.N.D. Kelly’s *Early Christian Doctrines, *page 493, it says:The real contribution of these early centuries, however, was more positively theological, and consisted in representing Mary as the antithesis of Eve and drawing out the implications of this.
Kelly then references Justin Martyr’s *Dialogue with Trypho the Jew *(chap. 100), Irenaeus of Lyon’s *Against Heresies *(3, 22, 4; cf. 5, 19, 1), Tertullian’s
On the Flesh of Christ (17, 2).
Also, on page 494, Kelly says:
Irenaeus further hinted both at her [Mary’s] universal motherhood and at her cooperation in Christ’s saving work, describing [in *Against Heresies, 4, 33, 11] her womb as ‘that pure womb which regenerates men to God’.
An English translation of Justin Martyr’s *Dialogue with Trypho the Jew, *Irenaeus of Lyon’s
Against Heresies, and Tertullian’s
On the Flesh of Christ can be found in the Church Fathers section of
www.newadvent.org
BTW, J.N.D. Kelly was a Protestant.