The head of every man is Christ; and the head of the woman is the man. 11:3
Trivia: According to 1 Corinthians 11:7, who is the glory of God and who is the glory of a man?
Paul says that the other apostles traveled with their wives - including Peter. We know from Mark 1:30 that Peter had a wife, since Jesus cured his mother-in-law. Paul confirms Peter's marital status here.