Hello, my name is ***** ***** i can assist you with your question today.
what are the circumstances
How does he come to be in custody?
On the face of it, you restraining order would prevent you having contact.
If he genuinely is in prison then the prison authorities should not allow access anyway although the reality is that they are not all that well organised.
If you are on a restraining order though that means no contact at all. It does depend on the terms of your order but it is very unlikely that you would be allowed to see him within its terms.
Can I clarify anything for you?
It depends on your order but it is almost certainly prohibited?
You can go back to court and apply but the chances of it happening are fairly low.