English.ly breaks all flats for key signature

[Peter Otto]

Unable to get any flats in the Key Signature when I include the English.ly
When I enter "es" for \key it returns E double sharp.  "e" will work as well.  All flats i.e. "eis" will fail.

\version "2.14.2"
\include "english.ly"

EFlatWontWork = 
    \relative c' {     
    \key eis \major    
    <<
    \new Voice = "eFlat" { {e} }
      >> 
    
}
\score {
    \new Staff = "uppera" \EFlatWontWork
    \midi { 
    }
  \layout {
  }
}  


Thank you