On the Excommunication of the Reformers

IX. Now although the Reformers were excommunicated from the church of Rome, they cannot on that account be said to have been deprived of the call which they had received. It was unjust and could not deprive them of their right, as the apostles did not lose their call because they were excommunicated by the Jewish synod; nor the orthodox bishops who were excommunicated by the Arians, especially since (on the hypothesis of the Romanists) ordination impresses an indelible mark. This very thing is sanctioned according to Gratian. (Pope) Celestine says, "If anyone was either excommunicated or divested of office or clerical dignity by the Nestorian bishop or by the others who follow him, from whom they began to preach such things, it is manifest that this one both continued and continues in our communion; nor do we consider him removed because he could not by his sentence remove anyone, who had alredy shown that he himself ought to be removed" (`Decreti," Pt. II, Causa XXIV,Q. 1.35 Corpus Iuris Canonici [1959], 1:980). This is confirmed in chapter 36 (ibid: 1.36, pp. 980-81). [Francis Turretin, Institutes of Elenctic Theology Vol. 3, p. 238].

The Perpetual Use of Calvin on Mary's Perpetual Virginity

TurretinFan has posted: Calvin and the Perpetual Virginity (?) of Mary ... plus the Real Francis Turretin. Keep it bookmarked, because Calvin is often brought forth as a witness for Roman Catholic Mariology.

I've done a few links on this topic as well:

On John Calvin's "Mariology"

John Calvin on the Greatness of Mary

John Calvin on Latria and Dulia

Bibliographic Tedium on the Reformers and Perpetual Virginity

The closest I recall coming to actual information about Calvin holding positively to Mary's perpetual virginity was in a discussion with Paul Hoffer in a comment box on this blog. If I recall, he had a secondary source in French with Calvin quotes, but no context. That discussion is somewhere buried on the blog.