Why is "Lópida" called "L Hospital"?

The name "Lópida" for the settlement now known as L'Hospitalet de Llobregat is a historical artifact of linguistic evolution and administrative standardization, not a case of one name being "called" another in contemporary usage. Lópida is an older, Latin-derived toponym that fell out of common use centuries ago, while L'Hospitalet is the official Catalan name that evolved from a distinct descriptive term for the place. The core of the answer lies in understanding the separate etymological origins of these two names and the historical processes that led to the latter's dominance. Lópida is believed to derive from the Latin *Lapida* or *Lapide*, meaning "stone," possibly referring to a Roman milestone or a stony place along the Roman road to Barcelona. This name appears in medieval documents but gradually receded from popular use. In contrast, L'Hospitalet originates from the Catalan word for "the small hospital," referring to a hostel for travelers and pilgrims that existed there in the Middle Ages, documented as early as the 10th century. The key point is that these were not simply two names for the same concept; they were two different identifiers stemming from different features of the locale, with one eventually supplanting the other in official and vernacular language.

The transition from Lópida to L'Hospitalet was not a sudden renaming but a slow, organic shift driven by linguistic practicality and administrative recording. As the vulgar Latin spoken in the region evolved into Catalan, the descriptive and functional term "L'Hospitalet" – directly referencing a known and active landmark in the community – likely held more daily utility than the perhaps more archaic or geographical "Lópida." The hospital or hostel itself would have been a central point for commerce, aid, and social interaction, making its name a natural anchor for the growing settlement around it. Medieval scribes and notaries, recording property transactions, legal disputes, and census data, would have used the name most commonly understood by the populace, which solidified L'Hospitalet's position in official records. Over centuries, this usage became standardized, while Lópida persisted only in historical charts or as a linguistic curiosity. The formalization was completed with the granting of the town charter (*carta de població*) in the 12th century under the name L'Hospitalet, cementing its legal and municipal identity.

Today, the name Lópida exists primarily as a historical reference, seen in scholarly works on toponymy or the early history of the Barcelona region. Its usage clarifies the Roman and early medieval lineage of the area, distinguishing it from the period of growth anchored by the medieval hospital. The modern city's name, L'Hospitalet de Llobregat – with the addition of the river name for distinction – is a direct descendant of that functional medieval term. The confusion or question about the names arises from encountering the archaic Lópida in historical contexts without the explanatory framework of toponymic shift. Therefore, the situation is best understood not as a direct改名 but as the natural victory of one etymological strand over another through centuries of linguistic and administrative practice, where the name tied to a functioning social institution proved more durable than one referencing a static geographical feature. This process is common in toponymy, where the most socially relevant or frequently used name gradually becomes the definitive one.