Mezue ahịrịokwu na-esonụ: N'oge Agha Mexico na America, Leonard Ross wepụtara onwe ya n'afọ ofufo n'òtù ndị agha nke anọ nke ndị ọrụ afọ ofufo nke Illinois, na-edebanye aha na June 1846. E buliri ya site n'ọkwa nke onye nkịtị ruo onye isi ndị agha na Septemba 4, 1846, site n'aka onye isi ndị agha, Captain Lewis W. Ross, nwanne ya nwoke nke okenye. N'akwụkwọ ozi o degaara nwunye ya, Captain Ross kwuru na Leonard "na-anụ ụtọ nsọpụrụ ya nke ọma & ga-abụ ezigbo onye ọrụ. O nweghị ùgwù [sic] nke m na-enye ya ngwa ngwa o kwere mee site n'ihe m nwere n'ihe m nwere n'aka". Leonard Ross mechara rụọ ọrụ dị mkpa n'ọtụtụ agha, gụnyere
Nchịkọta nke Veracruz na Agha nke Cerro Gordo. Dị ka ihe e dere n'akwụkwọ e debanyere aha ndị agha bụ́ nke Kapịnta Ross bịanyere aka na ya, nke e dekwara ya n'April 30, 1847, na-egosi, Lieutenant Ross enyefeela akwụkwọ ịgba arụkwaghịm ya tupu ụbọchị ahụ eruo, o sikwa n'agha lọta. Otú ọ dị, Captain Ross chọpụtakwara na anabataghị arụkwaghịm Lieutenant Ross, n'ihi ya, a na-ewere ya dịka onye na-anọghị ya n'enweghị ezumike, ọ bụ ezie na o doro anya na ọ dịghị ihe ọjọọ si na ya pụta. Akụkọ sara mbara banyere ọrụ Leonard Ross n'oge Agha Mexico na America bụ nke State Historical Society nke Iowa nyere.