He married Johanna Franziska Plagemann am 10 Sep 1900 in Ibbenbüren 

 II-1Theresia Elisabeth Haermeyer, Born 26 Dec 1897, Died 6 Aug 1963

 II-2Heinrich Bernhard Haermeyer, Born 8 Mar 1901, Died 20 Nov 1911

 II-3Johanna Theresia Haermeyer, Born 23 Feb 1903, Died 11 Dec 1977

 II-4Anna Maria Haermeyer, Born 30 Jul 1905, Died 17 Dec 1976

 II-5Anton August Haermeyer, Born 2 Jul 1907, Died 22 Dec 1909

 II-6Rosa Antonia Haermeyer, Born 14 May 1909, Died 13 Jun 1909

 II-7Franz Josef Haermeyer, Born Nov 1910

 II-8Franz Heinrich Haermeyer, Born 11 Nov 1912, Died 3 Jun 1993

 II-9Maria Martha Haermeyer, Born 29 Nov 1914, Died 23 Mar 1971

 II-10Josefa Paula Haermeyer, Born 24 Jan 1917, Died 7 Sep 2001

 II-11Maria Margarethe Hage-Haermeyer, Born 5 Oct 1921, Died 15 Jan 2002