The Secret History of the Mongols
Paul Pelliot translated the name "Torghut" as "garde de jour". He wrote that the Torghuts owed their name either to the memory of the guard of Genghis Khan or, as descendants of the Keraites, to the old "garde de jour". This was documented among the Keraites in "The Secret History of the Mongols" before Genghis Khan took over the region (Pelliot, 1930:30).