Mike Biersack was born in Germany.  In 1853 he founded a brewery in Beaver Dam Wisconsin.  He sold the business in 1856 to John Goeggerle and became a butcher.  He died on May 10th 1873 at the age of 57 years.  The brewery he founded would eventually become the Louis Ziegler Brewery.

John Goeggerle was born in Germany.  He moved to America in the 1840s and settled in Beaver Dam, Wisconsin where he met and married Juliane Schwandt, an emigre from Prussia.  The union was in the late 1850s and ultimately produced 13 children.

In 1856 Goeggerle and John and Joseph Patzlsperger purchased the brewery in town owned by Mike Biersack (also Biersach).  When Joseph died in 1861 Goeggrle purchased both brothers shares and continued on as sole proprietor.  He ran the brewery until he died on May 19th, 1902.

Upon his death Juliane took over operations for two years then sold in to Louis Ziegler in 1904.  The brewery operated as the Ziegler brewery until 1950.  It closed down for good in 1953.

John Louis Ziegler, known as Louis, was born in Mayville, Wisconsin.  When he was 16 years of age his father bought the South Side brewery in town and employed young Louis in the firm from the start.  Eventually Louis was placed in charge of the business end of the brewery, while his father concentrated on the manufacturing.  When his father died in 1892 Louis took charge of the brewery completely, and ran it for another ten years.

In 1902 Louis took the opportunity to purchase another brewery in the neighboring town of Beaver Dam from the estate of John Goeggerle.  The Goeggerle's had been in the brewery business since 1856, a full generation before Ziegler's family.  Growing up in a brewery allowed Louis to fill Goeggerle's shoes well, and the Beaver Dam firm thrived.  When a fire in 1912 leveled the brewhouse Ziegler rebuilt and even larger building and constructed a mansion on the site of the old brewery.  The two Ziegler breweries just 16 miles apart established a reputation for good beer in Dodge County that would keep the Ziegler name in the brewery business for another 50 years.  

Louis Ziegler died on the 4th of September 1927 at age 68 years.  His house in Beaver Dam still stands over the ruins the original Goeggerle brewery The Mayville brewery never reopened after prohibition.  The Beaver Dam plant closed down in 1953.