I have a Christian Johann Friedrich Büttner, b.10 Sept 1807 Schwetzin, Mecklenburg, d. after 1868 in Milwaukee, Wisc.He married Hanna Maria Köpcke 31 July 1829 in Jördenstörf, Mecklenburg. Hanna died 4 Apr1840 in Schwetzin after the birth of their 7th child.Their children were Johann Heinrich Friedrich Carl b.10 Mar 1828; Carl Joachim Heinrich Theodor b.3 Oct 1829; Georgina Sophia Maria Elizabeth b.30 May 1831; Sophia Hanna Friederica Louisa b.15 Jan 1833; Carl Heinrich Christoph Friedrich b.24 Dec 1834; Friederica Sophia Dorothea b. 4 Apr 1840 in Schwetzin, d. 3 Mar 1841 in Schwetzin.Christopher Johann Friedrich Büttner then married 8 May 1840 in Jördenstorf to Henrica Juliana Sophia Kannsehr b.24 Mar 1811 in Todendorf, d.19 Jan in Schwetzin. Their children were Sophia Maria Friederica Hanna b. 7 May 1842 in Schwetzin, d.15 Dec 1917 in Raymond, Wisc; Friederica Carolina Hanna Augusta b.14 Aug 1845 in Schwetzin. Maria Friederica Hanna Büttner married 21 Oct 1864 in Jördenstorf to Carl Johann Christian Burmeister b.30 Jul 1836 in Schwetzin, d.17 Mar 1919 in Raymond, Wisc., my great-grandparents.Hope this helps you.