Wechselberg was born in Barmen in the Rhine Province of the Kingdom of Prussia on March 9, 1838, and came to Wisconsin with his parents in 1848 (his father did not want his sons to be conscripted into the Prussian Army). The family initially lived in a log cabin in the Town of Lake. He received a common school and commercial education, and settled at Milwaukee, where he first went to work for a carriage maker at a salary of $30 a year (plus board). He later established the Thos. H. Brown carriage manufacturing works in 1861; he was in the carriage manufacturing business until 1879, then became a real estate dealer. Wechselberg went on to develop what is now the North Grant Boulevard Historic District, listed on the National Register of Historic Places.
Public office
Wechselberg was alderman of his ward from 1872 to 1876, and was then elected clerk of circuit court of Milwaukee County, serving from 1877 to 1883; during this period, he studied law and became an attorney. He declined re-nomination in 1882 to devote more time to his real estate business.
He was described in a 1922 Milwaukee Telegram article as "the oldest realtor in Milwaukee", as well as the oldest member and dean of past masters of the Kilbourn Masonic Lodge (the oldest in Milwaukee).[4]