Mercy, thank you for the question.
llworking, thank you for the clarity. I undestand the following:
My ex-wife worked for several years before becoming disabled. Therefore she is receiving SSDI.
My child is receiving SSI.

If I may segue...

I believe that the benefits that I am receiving in my childs name are not taxable on my 1040. Is my understanding correct?

Thanks again for all your help.