Arnould Locard, Étienne Alexandre Arnould Locard (1841-1904), French malacologist
Dr. Edmond Locard (13 December 1877 – 4 May 1966) was a pioneer in forensic science who became known as the "Sherlock Holmes of France".
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The young Georges Simenon, later to become a well-known detective writer, is known to have attended some Locard lectures in 1919 or 1920.
Sir Simon Locard, 2nd of Lee, is said to have accompanied Sir James Douglas on his expedition to the East with the heart of Robert the Bruce, which relic, according to Froissart, Locard brought home from Spain when Douglas fell in battle against the Moors at the Battle of Teba, and buried in Melrose Abbey.