Here's an interesting compare and contrast between Catholic Answers and Clement of Alexandria (and Eusebius) on whether or not Peter was married. The biblical text which fuels this comparison is 1 Corinthians 9:5. Paul says that the Apostles have particular "rights," and one such right is taking a wife along when ministering... just as the Apostle Peter did! Here is the passage from the NAS:
3 My defense to those who examine me is this: 4 Do we not have a right to eat and drink? 5 Do we not have a right to take along a believing wife, even as the rest of the apostles and the brothers of the Lord and Cephas? 6 Or do only Barnabas and I not have a right to refrain from working? 7 Who at any time serves as a soldier at his own expense? Who plants a vineyard and does not eat the fruit of it? Or who tends a flock and does not use the milk of the flock?
Out of curiosity, I consulted the North American magisterium, Catholic Answers, to find out what this verse really means (read: sarcasm). What intrigued me about their answer was that they included a quote from Clement of Alexandria to substantiate their answer. Here's what Catholic Answers stated,
...[T]he apostles [were] accompanied by 'sister women' who could assist them in ministering to women—for example, at full-immersion baptisms, where a question of modesty could arise, or in cases where it would be more appropriate for a woman to perform a charitable or catechetical function. Clement of Alexandria agreed, saying the women were not the wives of the apostles but were female assistants who could enter the homes of women and could teach them there (Stromata III, 6). In short, I think Peter was a widower at the time his mother-in-law was healed.
With as much dripping sarcasm as I can muster through the printed word: The Fathers! The Fathers! The Fathers! So... I then went off to see what Clement of Alexandria said in context, and well... he didn't say what Catholic Answers asserts. In fact, he says the opposite, and none other than Eusebius backs Clement up on it! Here's the text from Clement (bolding mine):
Clement of Alexandria:
52. How then? Did not the righteous in ancient times partake of what God made with thanksgiving? Some begat children and lived chastely in the married state. To Elijah the ravens brought bread and meat for food. And Samuel the prophet brought as food for Saul the remnant of the thigh, of which he had already eaten. But whereas they say that they are superior to them in behaviour and conduct, they cannot even be compared with them in their deeds. "He who does not eat," then, "let him not despise him who eats; and he who eats let him not judge him who does not eat; for God has accepted him." Moreover, the Lord says of himself: "John came neither eating nor drinking, and they say, He has a devil. The Son of man came eating and drinking and they say, Behold a gluttonous man and a wine-bibber, a friend of publicans and a sinner." Or do they also scorn the apostles? Peter and Philip had children, and Philip gave his daughters in marriage.
53. Even Paul did not hesitate in one letter to address his consort. The only reason why he did not take her about with him was that it would have been an inconvenience for his ministry. Accordingly he says in a letter: "Have we not a right to take about with us a wife that is a sister like the other apostles?" But the latter, in accordance with their particular ministry, devoted themselves to preaching without any distraction, and took their wives with them not as women with whom they had marriage relations, but as sisters, that they might be their fellow-ministers in dealing with housewives. It was through them that the Lord's teaching penetrated also the women's quarters without any scandal being aroused. We also know the directions about women deacons which are given by the noble Paul in his second letter to Timothy. Furthermore, the selfsame man cried aloud that "the kingdom of God does not consist in food and drink," not indeed in abstinence from wine and meat, "but in righteousness, peace, and joy in the Holy Spirit." Which of them goes about like Elijah clad in a sheepskin and a leather girdle? Which of them goes about like Isaiah, naked except for a piece of sacking and without shoes? Or clothed merely in a linen loincloth like Jeremiah? Which of them will imitate John's gnostic way of life? The blessed prophets also lived in this manner and were thankful to the Creator.
Granted, there is some ambiguity because the English word for wife being used is, "consort." Nor do I know which Clement source Catholic Answers used. Could it be that I'm simply misreading Clement? Could it be that I'm demonstrating "Protestant" bias? Nope. Check out what Eusebius wrote, reading the same context:
Eusebius: Chapter 30 The Apostles That Were Married
1. Clement, indeed, whose words we have just quoted, after the above-mentioned facts gives a statement, on account of those who rejected marriage, of the apostles that had wives. "Or will they, says he, reject even the apostles? For Peter and Philip begot children; and Philip also gave his daughters in marriage. And Paul does not hesitate, in one of his epistles, to greet his wife, whom he did not take about with him, that he might not be inconvenienced in his ministry."
2. And since we have mentioned this subject it is not improper to subjoin another account which is given by the same author and which is worth reading. In the seventh book of his Stromata he writes as follows: "They say, accordingly, that when the blessed Peter saw his own wife led out to die, he rejoiced because of her summons and her return home, and called to her very encouragingly and comfortingly, addressing her by name, and saying, 'Remember the Lord.' Such was the marriage of the blessed, and their perfect disposition toward those dearest to them." This account being in keeping with the subject in hand, I have related here in its proper place.
Conclusion
Frankly, I appreciate the writings of the church fathers, but I do not hold them to be that which is the final voice that determines what a Biblical passage means. On the other hand, Rome's defenders do claim the church fathers are of key importance to establish the validity of Roman Catholicism. This text from Clement and its use by Catholic Answers demonstrates a severe disconnect. When they cite something... look it up!