A Jesuit Chaplain on the Rio Grande

The Writings of John McElroy During the American Invasion of Mexico (1846-1847)

Authors

DOI:

https://doi.org/10.34096/hyg.n9.17214

Keywords:

military chaplain, John McElroy, Mexico, catholicism, jesuits

Abstract

This paper examines the letters and unpublished diaries written by the Jesuit John McElroy while acting as a chaplain in the U.S. Army during 1846 and 1847, in the Mexican-American War. It is argued that, in addition to the inherent ambivalences of the military chaplain’s role, particular contradictions arose in this case: both McElroy and his companion, Anthony Rey, were Catholics (and Jesuits) serving a predominantly Protestant nation that was, furthermore, waging war against a Catholic country. In this regard, the political and religious purposes behind their mission are considered. McElroy’s comments on slavery, made during his passage through the American South, and on his interactions —while stationed at the base in Matamoros— with the Mexican population and the American troops are analyzed. Finally, the paper offers an assessment of the successes and failures of his pastoral activity.

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Author Biography

  • Tomás Oubiña, University of Buenos Aires, Argentina

    Tomás Oubiña holds a degree in History from the University of Buenos Aires. As a UBACyT research fellow, he is investigating the influence of the California Gold Rush on the political and economic ideas of Argentines exiled in Chile. He conducted research at the Bancroft Library (UC Berkeley) after receiving the Reese Fellowship. He is the author of the articles ‘“La hacienda andina y el modo de producción en América colonial” (Sociedades Precapitalistas, 2025) and “Estancia y frontera. Ambivalencias del capitalismo temprano en la campaña de Buenos Aires (1750-1850)” (Pasado Abierto, in press).

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Published

2026-04-09

Issue

Section

Articles

How to Cite

A Jesuit Chaplain on the Rio Grande: The Writings of John McElroy During the American Invasion of Mexico (1846-1847). (2026). Historia & Guerra, 9, 119-146. https://doi.org/10.34096/hyg.n9.17214