Not sure, if you are aware of that, but just for completeness:
While recently doing a research similar to this here about Ash Anvari:
@Jeff himself confirmed @jajagappa's assumption from above, that Smithers is the same but incorrectly named village as Man Vill. He even provided an excerpt from his master maps regarding this area.
In addition I've realised, that Man Vill is already on the Upland Marsh map in Wyrms Footnotes #15 and in Sartar: Kingdom of Heroes, p.321, which both stem from Tales of the Reaching Moon #19 ...
With Tales of the Reaching Moon #19 from (I think) the year 2000 and the Dragon Pass Gazetteer map from 2003, it seems to be obvious, where the mistake was made ...