Q. Can you please advise on this very important matter to me?
I think I understand Shariah law concerning this, and that it is permitted, but I want to be very sure?
Would it be permissible for my Ex-wife (who is completely Un-related by blood, to me & my family) to marry my uncle (my father’s younger brother?)
I would personally support their union; however I want to be sure it is permissible according to Shariah law.

Thank you.

A: yes, such a union would be valid.

You have to practice the rules of hijab with her.

Allah Certainly Knows Best.