"The German brewer David Gottlob Jüngling immigrated to the United States in 1823 from Aldingen, a suburb of Stuttgart, in the Kingdom of Württemberg.
He anglicized his surname from Jüngling to Yuengling and began the "Eagle Brewery" on Center Street in Pottsville in 1829. His eldest son, David, Jr., left the Eagle Brewery to establish the James River Steam Brewery along the James River in Richmond, Virginia.
The first brewery burned down in an 1831 fire and the company relocated to W. Mahantongo Street at 5th Street, its current location. The Eagle Brewery changed its name to "D. G. Yuengling and Son" in 1873 after Frederick Yuengling joined his father David in running the company. Although the company's name changed, the bald eagle remained the company's emblem.
During the late 19th century, breweries were also opened in Saratoga Springs, New York City, and Trail, British Columbia, although they were eventually merged with the Pottsville plant."
Source: Wikipedia