Neumann had also been the administrator of the Ponce Customs House in 1846 .
Guillermo Neumann ( c. 1800 - c. 1860 ) was Mayor of Ponce , Puerto Rico , from 23 April 1951 to September 1951 .
Mayor had also been the Mayor of the Ponce Customs House in 1846 .
Guillermo Neumann ( c. 1800 - c. 1860 ) was Mayor of Ponce , Puerto Rico , from 23 April 1951 to September 1951 .