It is very possibly the same Peter Wolters who ran the Enterprise Brewery in Philadelphia from 1880-1886.He had a smaller brewery in Philadelphia on North 2nd Street in 1879-1880.In 1870-1871, this Peter Wolters was the brewmaster for the Robert Portner Brewery in Alexandria, Virginia.In his memoirs, Portner wrote:
"In the winter of 1870-71, I had Peter Wolters, Carl’s [younger] brother, as a master brewer.He was a good brewer and a hard worker, but had a bad character.The beer he brewed was so good that we became also known in Washington, where I got new customers.I supervised the brewery myself, kept the books, engaged new [customers], and visited old customers.In the office I had the help of a young man.In April 1871, I discharged Wolters and hired a young man named [Edward] Fielmayer, who was a barkeeper in Washington, but he was the son of a brewer from Philadelphia...."
Peter was the younger brother of Carl Wolters, who had also been a brewmaster for Portner in 1866-1867:
"I finally found a man named Carl Wolters....Although Wolters’s knowledge was merely theoretical rather than practical, I preferred him to other applicants because he was an educated man....It was in the fall that we neutralized the beer which was left in the cellars as well as possible with bicarbonate of soda.(This method was unknown to the old brewers.) We sold part of this beer; but soon it was no longer possible since the other brewers already had fresh beer to sell.So we also started with the brewing.I assisted [Wolters] and had him show me everything.At night he gave me instructions in theory and we often studied until 10 p.m.We brewed together applying several methods; we also made ale.Finally, in November 1866, the beer was ready; but it was not yet good enough.The ale was not right either, but I was glad to sell three or four kegs of ale a day only to get some cash.Gradually the beer and the ale became better.
"The business doubled; I sold five to six kegs a day and sometimes even eight to ten.I worked eagerly with [Wolters] and I had the opportunity to learn everything completely.I traveled through the state, got some customers, and many a day showed already sales of twelve to sixteen kegs of beer and ale together.On May 1, 1867, the lager beer which we had stored in the cellars on Washington Street came out for sale.We had pumped out the old sour beer, partly making vinegar of it, partly pouring it away.The new beer was good but the sales were small.I had prepared eight hundred barrels, and sold about three hundred barrels to other brewers, this year showing a loss of $2,000.But I had a few customers.Since Wolters left me at this time, I hired another brewer named Jacob Biehle from Richmond, where he had been assistant brewer with Yuengling.But now I was able to supervise the business in every detail, which I did.Every day I went to the cellars and learned more. We brewed the beer the way Wolters had taught me, and the ale was also good.I believe that I sold twelve hundred barrels in 1866-67.By this time I also got some customers in Washington.I went on to work hard, once more sold some beer to other brewers and raised the sales to about seventeen to eighteen hundred barrels."
Carl Wolters had his own Philadelphia breweries from 1875 to 1886.
In any case, it might be worthwhile checking out Philadelphia to see if you can pick up the line.