Daniel Alcides Carrión (1857-1885) was a Peruvian medical student who established the relationship between the clinical entities called Oroya fever and Peruvian wart, until then independent diseases. By autoinoculation of Peruvian wart extracts from a patient, he contracted the Oroya fever. This fact showed that both clinical entities occurred due to the same cause. Subsequent investigation showed that the agent involved was the bacteria Bartonella bacilliformis. On the other hand, a street called Carrion is located in front of the Faculty of Medicine of the University of Chile. It is a legend or medical tradition in this Faculty that this street is named in honor of this Peruvian martyred student. This work shows that this medical story has no historical basis and analyzes its true origin.