You still haven't proven that this is a correct spelling.  The E/East part should be easily parseable by the search.  However there are multiple possible:

Bellefontaine <- US Census
Bellefountain
Bellefontane
Bellfontane
Bellfountain
Bellfountaine

Are they all supposed to map to this road?  Where's the evidence that some/all of these are correct?   Who initially named this road?