Joseph Louis Lagrange

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Lagrange studied at the college of Turin, then the capital of the kingdom of Sardinia. There he took an interest in physics, inspired by excellent teaching of Beccaria.
He certainly did devote himself to mathematics, but largely he was self taught and did not have the benefit of studying with leading mathematicians. Lagrange did correspond with Euler, and sent him his early results. Euler was very impressed with his work, and proposed Lagrange for election to the Berlin Academy and he was duly elected on 2 September 1756. However, he did not study or work under Euler; that notion was introduced by the Mathematics Genealogy Project http://www.genealogy.math.ndsu.nodak.edu/id.php?id=17864 'to show a link to Euler to show a connection in our intellectual heritage'.
Both Lagrange and Euler collaborated on calculus of variation together with d'Alembert http://www-gap.dcs.st-and.ac.uk/~history/Biographies/Lagrange.html

Cross-listing: Physics Tree