In what area were the Leičiai native to during 1219 and 1295?
Leičiai:  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. History of Lithuania (1219–95): The history of Lithuania between 1219 and 1295 concerns the establishment and early history of the first Lithuanian state, the Grand Duchy of Lithuania.
Lietuva Land