"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?" 1 Corinthians 9:5 (emphasis added for your edification)
"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 only he 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." St. Jerome, commentary on 1 Corinthians 9:5, circa 400 AD.