Born in Baden-Baden, Germany in 1855, Leopold Mueller came to the United States in 1872 at the age of sixteen where he had been educated and learned the baking business in his homeland.  He settled in Buffalo and was employed by baker Conrad Kaiser on Vermont Street.   He was most likely attracted to Buffalo because of its many grain mills that supplied one of the key ingredients in bread.

After marrying Katherine Diel, he later established his own bake shop on Farmer Street in 1889 (which operated for over 50 years).  His bakery was so popular that he needed three bakers and two delivery rigs and used thirty-two barrels of flour per week.

One of the first persons to install electricity in Black Rock, Mr. Mueller was required to pay $125 to help meet the cost of erecting poles and stringing lines on Farmer Street.  As more people contributed to the cost, he was supposed to receive compensation but never did, so that electricity was really his gift to Black Rock.

He was beloved by all of Black Rock, was a charter member of the Holy Name Society of St. Francis Xavier Church and a member of many other organizations.  Mr. Mueller, a baker his whole life, died at age 84 in 1939.