Berlin was in 1890 and still is today, primarily Lutheran. Northern Germany after the Reformation, became Lutheran while parts of western and for sure, Bavaria remained Roman Catholic. There was in Berlin, in 1890, a sizeable Jewish population as well but was decimated during the Third Reich. Religion in Berlin, even in 1890, was not as pervassive as Munich for example. The majority of Berliners, became Socialists and didn't attend church very often or not at all. The Protestants in Berlin have a history of being very liberal as well as in Hamburg.
need more info about the religion that was practiced
Christianity
Robert Liebmann was born on June 5, 1890, in Berlin, Germany.
Fritz Delius was born on September 28, 1890, in Berlin, Germany.
Bruno Cieslewicz was born on November 26, 1890, in Berlin, Germany.
Ernst Blass was born on October 17, 1890, in Berlin, Germany.
William Trow was born on October 19, 1890, in Berlin, Germany.
Frederic Mellinger was born on November 15, 1890, in Berlin, Germany.
Hans Minzloff was born on February 16, 1890, in Berlin, Germany.
Manfred Gurlitt was born on September 6, 1890, in Berlin, Germany.
Karl Haacker was born on July 25, 1890, in Berlin, Germany.
Heinz Hilpert was born on March 1, 1890, in Berlin, Germany.