In what area were the Leičiai native to during 1219 and 1295?
Leičiai Leičiai (singular: leitis) were a distinct social group of the Lithuanian society in the early Grand Duchy of Lithuania subordinate to the Lithuanian ruler or the state itself. Leičiai were native to the Lietuva Land and formed the core of the Lithuanian society in the pre-state era and during the establishment of the state. Leičiai made up the majority of the military-economic staff of the state: they enforced state authority in the periphery, protected state borders, and performed various other war-related functions, such as breeding riding horses. By the 15th and 16th centuries, leičiai were in decline, already losing some of their functions and prestige, and they disappeared as a social class after the implementation of the Wallach Reform.
Vellavi The Vellavi were a Gaulish people in the region of Le Puy-en-Velay in the region of the Auvergne, which, at the time of Julius Caesar's campaigns against the Gaul ("Gallic Wars") lay on the border of Gallia Narbonensis. The "oppidum" of Ruessium, an early seat of a Catholic bishop, began to be called during the 4th century the "[civitas] que dicitur Vetula in pago Vellavorum"— the city "called Vetula in the country ('pays') of the Vellavi" a document of 1004 termed it (Lauranson-Rosaz). "Vellavi" is retained in the modern toponym "Le Velay".