Hij is getrouwd met Maria Magdalena Josephine LAPRÉ.
Zij zijn getrouwd op 16 november 1913 te Probollingo, Java, hij was toen 24 jaar oud.
They had the following children.
FiHelena Elsa VON BARNAU SIJTHOFF was born on 18 Sep 1914 in Probollingo, Java, Nederlands-Indie. She was christened on 12 Mar 1916 in Batavia, Java, Nederlands-Indie. She died on 9 Oct 1999 in Geldrop, Noord-Brabant, Nederland. She was buried on 14 Oct 1999 in Eindhoven, Gelderland, Nederland.
FiiMadi Catharina VON BARNAU SIJTHOFF was born on 16 Mar 1916 in Batavia, Java, Nederlands-Indie. She died on 9 Jan 2001 in Den Helder, Noord-Holland, Nederland. She was buried on 12 Jan 2001 in Den Helder, Noord-Holland, Nederland.
FiiiFrederike Albertine VON BARNAU SIJTHOFF.
FivDigna Leonore VON BARNAU SIJTHOFF was born on 20 Sep 1919 in Malang, Java, Nederlands-Indie. She died on 1 Jun 1920 in Malang, Java, Nederlands-Indie.
FvHedwig Olga VON BARNAU SIJTHOFF was born on 21 Oct 1921 in Malang, Java, Nederlands-Indie. She died on 6 Jul 1985 in Brisbane, Queensland, Australie.[Notes]
MviFeodor Wladimir VON BARNAU SIJTHOFF was born on 20 Mar 1923 in Koeningan, Java, Nederlands-Indie. He was christened on 15 Feb 1925 in Phaiton, Java, Nederlands-Indie. He died on 11 Aug 2008 in Riverside, Californie, Verenigde Staten. He was buried on 19 Aug 2008 in Moreno Valley, California, Verenigde Staten.[Notes]
FviiThelma Agnes VON BARNAU SIJTHOFF.
3Fviii Carmen Silvia VON BARNAU SIJTHOFF.
FixAsta Irene VON BARNAU SIJTHOFF was born on 17 Jun 1928 in Bodjonegoro, Java, Nederlands-Indie. She died on 17 Jul 2005 in Dordrecht, Zuid-Holland, Nederland.
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