I am looking for relatives of the family tree of my ancestor
Katharina Mathilde Luise Ehmke (born Macht)
born in Luetzel-Koblenz, Germany, on 26.4.1880
or her brothers and sisters
Johann Friedrich Karl Macht,
born in Luetzel-Koblenz, Germany, on 26.4.1880
Charlotte Marta Hedwig Griese (born Macht),
born in Neukoelln bei Berlin on 08.08.1881
Maria Adolfine Clothilde Krueger (born Macht),
born in Charlottenburg bei Berlin, 02.12.1882.
Maximilian Albert Macht,
born in Wehlheiden bei Kassel on 24.09.1885
Friedrich Arthur Oskar Macht,
born in Berlin on 21.12.1893.
Any help will be greatly appreciated.