First incorporated as a borough on June 7 , 1889 , Jeannette earned the nickname as " the glass city " in recognition of the numerous glass plants founded in the area , with those factories contributing to the city 's original stature as the first large manufacturing town in Westmoreland County . In fact , the impact of the glass industry was so significant that the city 's name actually comes from Jeannette E. Hartupee McKee , the wife of H. Sellers McKee , a local industrialist who cofounded the Chambers and McKee Glass Works and was a member of the elite South Fork Fishing and Hunting Club of Johnstown Flood fame . Mckee and his partner J.A. Chambers also have the distinction of naming Jeannette 's main street , Clay Avenue after their financial backer , Richard W. Clay . On January 1 , 1938 , Jeannette became a third class city with Attorney John M. OConnell as the first mayor
Johnstown Flood
Johnstown Flood
Jeannette, Pennsylvania