Macro-Siouan languages
The Macro-Siouan languages are a proposed language family that would include the Siouan , Iroquoian , and Caddoan families . 
<triplet> Siouan <subj> language family <obj> instance of <triplet> Iroquoian <subj> language family <obj> instance of <triplet> Caddoan <subj> language family <obj> instance of