<p>6:17 <em>For Herod himself had had John arrested and thrown into prison to please Herodias, his brother Philip's wife; for he had married her</em>- Josephus claims that she was in fact married to another relative, not Philip, before she married Herod (<em>Antiquities</em>&nbsp;18:136). We can simply decide to trust the Biblical record over Josephus. Or it could be that Josephus refers to a previous relationship she had. See on Mt. 14:10 for another conflict with Josephus.</p>