LaSalle was a brand of automobiles manufactured and marketed by General Motors' Cadillac division from 1927 through 1940. Alfred P. Sloan developed the concept for LaSalle and certain other General Motors' marques in order to fill pricing gaps he perceived in the General Motors product portfolio. Sloan created LaSalle as a companion marque for Cadillac. Like Cadillac, the LaSalle brand name was based on that of a French explorer, René-Robert Cavelier, Sieur de La Salle.

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Prior to the 1927 LaSalle, automobile design essentially followed a set pattern, with design changes driven principally by engineering needs. For example, the Ford Model T evolved only slightly over its production run; A 1927 Model T was almost identical to a 1910 Model T.

Harley Earl, who had been hired by Cadillac's General Manager, Lawrence P. Fisher, conceived the LaSalle not as a junior Cadillac, but as something more agile and stylish. Influenced by the rakish Hispano-Suiza roadsters of the time, Earl's LaSalle emerged as a smaller, yet elegant counterpoint to Cadillac's larger cars, unlike anything else built by an American automotive manufacturer.

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