Johann Jacob Tschummi, son of Jacob Tschummi(citizen of Ihringen and cabinetmaker)and the Katharina Bernhard, was born 27 June 1826.
On 7 October 1849 in Ihringen, Johann Jacob married Sophina Rosina Wintermantel (daughter of Johannes Wintermantel (citizen of Ihringen and farmer)were married.
I have no children listed (so far) for this marriage.
Johannes Wintermantel and Sophia Rosina (Woerne) had seven children:
Georg Friedrich, born 3 Nov. 1819, in Ihringen;
Johann Georg, born 8 August 1821, in Ihringen and was married to Maria Barbara Birmelin (on 3 February 1850)and died 5 July 1885;
Maria Barbara, born 16 April 1824 in Ihringen and was married 1. Matthias Stohrer on 4 July 1848, and 2. Jacob Mattmueller on 3 March 1850;
Georg Friedrich, born 1 May 1843 in Ihringen;
Wilhelm, born October 1827 in Ihringen and died 1 July 1859 (I have no spouse listed).
Sophia Rosina (as stated above)
and lastly a stillborn (5 September 1832) child. Sophia Rosina Woerne died while giving birth to this last child.
Johannes Wintermantel married a second time to Anna Maria Mueller.
If I can help with any other information, let me know as I have done a lot of work in Ihringen.