Augusto Lasserre: Birthplace and Date, Family Network, and his Brief Service as a Clerk under Urquizain Entre Ríos

Abstract

Rear Admiral Augusto Lasserre is a prominent figure in the Argentine Navy, widely recognized for his role in consolidating national sovereignty over the country’s southern regions. His contributions to exploration, a topographic treaty, the affirmation of sovereign rights, and the settlement of the Patagonian coast and South Atlantic islands—as well as in the founding of Ushuaia— have been extensively studied, analyzed, and disseminated by historians,, and are reflected in abundant memory-policy instruments such as toponyms, monuments, museum collections, and publications. In contrast, other aspects of his rich biography and his contributions to the naval field remain underexplored. The available information is often scattered, with unexplored or unresolved questions,and conflicting accounts across both specialized and popular publications. Drawing on unpublished sources and cross-referencing previously published documentation produced for other historiographical purposes, this article examines his family network, his date and place of birth, his immigration to Argentina, and his early activities  in  prior to the beginning of his distinguished naval career. The aim is to provide a more comprehensive understanding of his life, professional trajectory, and contributions.