This book presents empirical and anecdotal evidence on the persistence of the variety of Majorcan Catalan that has been spoken since the 1850s in San Pedro, Argentina. Drawing on a series of 60-minute interviews (N=49) conducted with speakers recruited from the community, this study demonstrates how most participants appear to have preserved their heritage language to some extent, according to their observed Performative Language Competency levels (PLCs). Building on participants' firsthand accounts, additional historical, anthropological, and sociolinguistic details are provided to convey a vivid picture of the community, its traditions, speakers' attitudes to their heritage language, and the current status of San Pedro Majorcan Catalan in terms of endangerment. Within the field of understudied minority languages in the Americas, the reader of this volume will find an innovative, distinct approach to bilingualism in ‘heritage vs. majority language’ settings, which will beof interest to scholars and students with a background in sociolinguistics, bi- and multilingualism, and language policy and revitalization.