[@LadyRunic] Oh.  OH.  When you said half-fey didn't work I thought you meant that they couldn't be born at all.  Sorry!  Right, so seasonborn are changed humans OR they are the children of one fey and one human (half-fey) OR they are the children of two seasonborn.  So all half-fey are seasonborn, but not all seasonborn are half-fey.  In terms of whether they're fey or human, though, all seasonborn count as fey.

Do I understand properly now?