Final answer:
The poet-musicians from the south of France who spread poems and songs of chivalry and courtly love were known as troubadours.
Step-by-step explanation:
The poet-musicians who flourished in the south of France were known as troubadours. In the context of medieval Europe, these poet-musicians were a key component of the culture, spreading poetry that often reflected themes of chivalry and courtly love through their songs. These troubadours performed in vernacular languages, making their work more accessible to the general populace compared to texts written in Latin. Their influence was part of a larger cultural movement that celebrated creativity, emotion, and the beauty of nature, in line with the traditions of the Romantic Period.