sentences:  He exerted considerable influence in public affairs and became administrator of the "German" Jews in Paris.On April 27, 1774, Pierre Briet, lord of Benapré, as front man for Calmer, bought from the creditors of the duke of Chaulnes the lordship of the barony of Picquigny and the function of vidame of Amiens in the Somme for 1,500,000 francs.A little later it was declared that the purchase was made in the name of Liefmann Calmer, full citizen of The Hague and naturalized Frenchman.