" 
 :* Thanks for the analysis. Important, I think, to keep in the forefront that this is the same place - whether under the rule of the imamate (or kingdom) or as part of Guinea. The way we render the spelling is a matter of choice (as the distribution you cite shows). Overriding considerations IMO would be harmonization of the ""nexus"" of Futa articles, not only on this region but also Futa Toro, so as not to confuse readers or create false distinctions: Why ""Fouta"" here and ""Futa"" there? What is the distinction between ""dj"" here and ""j"" there? Etc.  "