There are 2 titles associated with this person.

@book{ wphp_15164
  author={Ward,Henry George},
  year={1828},
  title={Mexico in 1827. By H.G. Ward, ESQ. His Majesty's Charge D'Affaires in that Country During the Years 1825, 1826, and part of 1827.},
  publisher={Henry Colburn [New Burlington Street] \& },
  address={London},    }
@book{ wphp_15163
  author={Ward,Emily Elizabeth and Ward,Henry George},
  year={1829},
  title={Six Views of the Most Important Towns, and Mining Districts, upon the Table Land of Mexico. Drawn by Mrs. H. G. Ward, and Engraved by Mr. Pye. With a Statistical Account of Each.},
  publisher={Henry Colburn [New Burlington Street] \& },
  address={London},    }