Bernard Cermenati
ca. 1783 - 1818
Of an Italian origins, was at one point in partnership with Bernarda and later with Monfrino. In 1807 Bernard Cermenati opened a looking glass store at 10 State Street in Newburyport.
A short biography, with an example of a looking glass by the same maker, is found "Collections onf Display," Historic New England, http://www.historicnewengland.org/historic-properties/homes/coffin-house/collections-on-display/?searchterm=Bernard%20Cermenati (accessed 09/02/2014)