This chapter explores developments in hemispheric and transamerican studies by grounding discussions of colonialism and incommensurability in narrations of place-names. It moves from the Pacific to the Midwest, using Commodore David Porter’s Journal of a Cruise Made to the Pacific Ocean, from the War of 1812, as a case study. Porter is of note not only because he was an important source for Herman Melville’s Pacific writings but also because his military travel writings sought to make the Marquesas part of the US political and popular imaginary. In renaming-to-claim the islands, Porter worked to undermine Indigenous epistemologies and histories. The chapter then turns to the Midwest, examining the Latin American place-names across the region – names that offer a nineteenth-century prehistory to accounts of widespread Midwestern Latinx presence. Surprisingly, stories of Porter’s battle off the coast of Chile in Journal of a Cruise have fed an imperialist “Latin American mapping” of Indiana through the naming of the city of Valparaiso, in Porter County. Using stories of place naming from the Indigenous Pacific and Latinx Midwest, the chapter highlights the vital necessity of hemispheric and transamerican literary studies for the nineteenth century.