This in turn derives from the Proto-Indo-European root '' * bhrgh '' meaning `` fortified elevation '' , with cognates including Welsh `` bera '' ( `` stack '' ) and Sanskrit `` bhrant - '' ( `` high , elevated building '' ) .
This in turn derives from the Proto-Indo-European root '' * bhrgh '' meaning `` fortified elevation '' , with cognates including Welsh `` bera '' , `` stack '' and Sanskrit bhrant - `` high , elevated building '' .