The importance of inscriptional material in the study of Vulgar Latin and Romance linguistics is well known. This is true in the case of Sardinia, too: the history and the chronology of some phonetic developments of the Sardinian language (e.g., Lat. qu, gu ≯ b (b); the prosthesis of i- before s- + consonant) can be better explained with the help of Latin inscriptional sources discovered in the island.
Prince Louis Lucien Bonaparte (1813--1891) was an important pioneer in the field of Basque, English, Italian and Sardinian dialectology, who deserves a much better treatment than what he has received in modern books of history of linguistics. The main aim of this research is to give more accurate information on this subject.