[Fontconfig] Fonts with multiple faces

[Donn]

Hello,
 I am really in the dark here. The tools I have at my disposal are Python and 
PIL's ImageFont module. I can open a ttf/otf or Type1 font (thank goodness) 
and I can (it seems) specify the index, but how do I get the family name (and 
style, if that's even separate) from those sub faces?

 I was wondering if there was some fc-* incantation that would help here?

\d