Having now documented Louis's address and instrument business near the Pont Marie Therese for the years 1691, 1692 and 1712, while the other Louis lived on the rue
Marmousets and evidently worked in his brother Nicolas's atelier (according to common practice, he would have used his brother's stamp), we can conclude that the former made instruments stamped 'L/Hotteterre' with a fleur-de-lis above, whereas instruments by the latter would have been made in the workshop of Nicolas Hotteterre and stamped 'N/Hotteterre' with a six-pointed star above.