Usually it is assumed, that Paul was not married. It is true, that a wife of him is never mentioned in the bible, but still there is some evidence:

Acts 26,10:
And that is just what I did in Jerusalem. On the authority of the chief priests I put many of the saints in prison, and when they were put to death, I cast my vote against them.

This indicates, that Paul was a member of the Sanhedrin, the great council. How else could he possibly vote for somebody’s death?

To be member of the Sanhedrin, a man had to be married!

Luzius Schneider 14. June 1999