Bill Poser (Language Log) reports:

Sir William Jones, the great scholar of "eastern" languages routinely (though incorrectly) credited with discovering the Indo-European language family and founding modern historical linguistics, was by profession a lawyer. He learned Sanskrit as a judge in India. In his book Dangerous Knowledge: Orientalism and its Discontents, Robert Irwin reports (pp. 123-4) that:

At an early stage in his life, Jones's father had considered attaching him to a chambers to get a legal education, but Jones had resisted this on the understandable grounds that the quality of the Latin used in English law books was so very bad.