Non Catholics use 1 Corinthians 9:5 to assume Peter had a wife. No version of the bible actually states he had a wife during the time he was with Jesus.
The Douay-Rheims bible version has this to say:
1 Corinthians 9:5 - "Have we not power to carry about a woman, a sister, as well as the rest of the apostles, and the brethren of the Lord, and Cephas?
5 “A woman, a sister”… Some erroneous translators have corrupted this text by rendering it, a sister, a wife: whereas, it is certain, St. Paul had no wife (chap. 7 ver. 7, 8) and that he only speaks of such devout women, as, according to the custom of the Jewish nation, waited upon the preachers of the gospel, and supplied them with necessaries."
The reference to ‘erroneous translators corrupting the text’ is interesting, and no more professional than polite. Translations and translators are neither ‘erroneous’ nor ‘corrupt’ merely because they are more free than another translator prefers.
The Greek is αδελφην γυναικα (‘adelphe^n gunaika’). The first term is, in its simplest reading, ‘sister’, in much the same way that Jesus’ mother and ‘brothers’ came to visit him in
Matthew 12:46-7. Were they literally Jesus’ brothers? Is the doctrine of the Perpetual Virginity false? If it is not, then one must read αδελφοι there in as free a manner as most translators read γυναικα in 1 Co 9:5, including those of the
NAB.
The second term is most simply ‘woman’, but has often been used for ‘wife’, from Homer on down. It also occurs in many locations in the NT, for example in Matthew 1:20 and 24, in which Mary is referred to as την γυναικα of Joseph. While this is, at its simplest rendering, ‘the woman’ of Joseph, most translations,
including the Douay-Rheims, use ‘wife’. The DR also uses ‘wife’ in Matthew 5:30-1, in Jesus’ discourse on divorce.
All in all, I believe that editors of the DR are, in this instance, being unfairly prejudicial and quite inconsistent towards a widely-accepted translation of the term in 1 Co 9:5. Like the rest of us, they are not infallible.