Question: Which province in Portugal contains inscriptions dedicated to Dercetius? 
Sentence (from "Lusitania"): Lusitania ( , Portuguese: "Lusitânia" , Spanish: "Lusitania" ) or Hispania Lusitana was an ancient Iberian Roman province including approximately all of modern Portugal south of the Douro river and part of modern Spain (the present autonomous community of Extremadura and a small part of the province of Salamanca).
Relevant evidence: Yes