Mezue ahịrịokwu na-esonụ: N'afọ 1821, ọ banyere n'òtù ndị agha ma sonye na
Njem ndị France mere na Spen, afọ abụọ ka e mesịrị, e buliri ya n'ọkwa onye isi ndị agha. Nsonaazụ nke afọ isii o jere ozi n'agha bụ akwụkwọ ncheta "Diary of the Spanish Expedition.