(1) He is married to Henriëtte Agathe Julia Alexandrine Hilda van Köppen.
They got married on March 11, 1881, he was 22 years old.
Child(ren):
(2) He is married to Maria Georgina Auguste Prinses Barclay van Tolly-Weymarn.
They got married on October 6, 1888 at Dresden, Saksen, he was 29 years old.
Child(ren):
Bron:
Gothaisches genealogisches Taschenbuch der freiherrlichen Häuser: zugleich Adelsmatrikel der im Ehrenschutzbunde des Deutschen Adels vereinigten Verbande, Volume 36, Julius Perthes., 1886, Pag. 948
https://books.google.nl/books?id=zrwTAAAAYAAJ&pg=PA948&dq=von+thuemmler+joachim&hl=nl&sa=X&ved=2ahUKEwia75u5jfTzAhWZ8rsIHctLAKQQ6AF6BAgIEAI#v=onepage&q=von%20thuemmler%20joachim&f=false
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