Organization and planning According to a written account given by Itzstein to Blum in 1847, Itzstein met Hansemann by chance in the apartment of the
co-editor of the
Deutsche Zeitung,
Karl Mathy. Hansemann advocated the idea that the opposition members of the
Baden,
Württemberg,
Hesse, and
Rheinpreussens state parliaments should hold a joint meeting to coordinate their actions in their respective chamber parliaments to help the idea of German unity and civil rights, gain greater influence. According to a letter written by Bassermann to Heinrich von Gagern, the organizers went so far as "we may hope to form the beginning of a German Parliament in Heppenheim. Hansemann then searched for a suitable venue and finally settled on Heppenheim in Hesse. Rural Heppenheim had the advantage of being far from the centers of potential revolutionaries such as
Mannheim. At the same time, the newly opened
railroad line from Frankfurt am Main to Heidelberg made it easily accessible from the north via
Frankfurt am Main and from the south via Mannheim, and it also had a nationally known inn,
Halben Mond, near the station. The invitations to the desired participants were sent out by letters from Hansemann, Bassermann, and Mathys to selected members of parliament on September 20, 1847, who were asked to invite other trustworthy members of parliament. While Hansemann invited primarily members of the
Rhineland and electoral Hesse, including
Hermann von Beckerath,
Ludolf Camphausen,
August von der Heydt,
Gustav Mevissen,
Georg von Vincke, and
Karl Wilhelm Wippermann. Mathy and Bassermann wrote primarily to southern German parliamentarians, including Theodor Reh and Heinrich von Gagern, who was always advertised in these letters because of his prominence as a participant, but also to more radical democratic politicians such as Franz Peter Buhl and
Christian Kapp. Although the initiators' letters repeatedly mention invitations to members of parliament in Saxony, these letters do not appear to have been sent.
Participants Those invited worked to coordinate their travel arrangements. Mevissen had the misfortune to get the date wrong and arrived one day after the event. The initiators received refusals from several invitees, including all of the Kurhessian,
Bavarian, and almost all of the
Prussian delegates who had been contacted. Some of those who refused, such as Theodor Reh and
August Emmerling, also cited the fear of state reprisals and the unwillingness of their constituencies to support them, if their participation in a meeting that could be considered radical, became known. In the end, only 18 members of the Chamber attended the meeting, most of whom were members of the Second Chamber in Baden or the Second Chamber in Württemberg. Most of the participants were well-known liberals beyond their state, and most of them were later represented in the Pre-Parliament and the Frankfurt National Assembly.
Participants from Baden Nine of the 18 participants in the Heppenheim conference were members of the
Baden Second Chamber: •
Friedrich Daniel Bassermann (1811–1855) was a merchant from Mannheim. From 1841 he was one of the most prominent opposition politicians in the Second Chamber of Baden. He was co-founder and editor of the Deutsche Zeitung. In 1848, he became chairman of the constitutional committee in the Frankfurt National Assembly. •
Franz Peter Buhl (1809–1862), a winegrower from
Deidesheim, was a representative for
Waldshut-Tiengen in the Second Chamber of Baden from 1844. •
August Dennig (1805–1883), a businessman from
Pforzheim, had been a member of the Baden Second Chamber since 1845. • Adam von Itzstein (1775–1855) had been a member of the Second Chamber since 1822 and resigned from the Baden civil service in 1823 for political reasons. His estate in
Hallgarten served as a meeting place for the liberal opposition. • Christian Kapp (1798–1874) was a professor at the
University of Heidelberg and a member of the Baden Court Council until 1844 when he resigned for political reasons. He represented
Offenburg in the Second Chamber in 1846. In 1848 he became a member of the Frankfurt National Assembly. •
Karl Mathy (1807–1868) worked as a journalist in
Karlsruhe and Mannheim after returning from
Switzerland, where he had been forced to emigrate in 1835 for political reasons, and was co-editor of the Deutsche Zeitung. From 1842 he was a member of the Baden Second Chamber of Parliament for
Konstanz. In 1866, Mathy became Baden's minister of state. •
Alexander von Soiron (1806–1855) was a lawyer in Mannheim. He was a member of parliament for
Lahr in the Second Chamber from 1845. In 1848 he became a member of the Frankfurt National Assembly. •
Carl Theodor Welcker (1790–1869) was a professor at the
University of Freiburg and was suspended and retired several times for political reasons. Together with
Karl von Rotteck, Welcker was editor of the
Staatslexikon. Since 1831 he was a member of the Second Chamber of Baden. • Ludwig Weller (1800–1863), like Soiron, was a lawyer in Mannheim. He was a member of the Second Chamber from 1835 to 1852.
Participants from Hesse-Darmstadt Two participants were members of the Second Chamber of the Grand Duchy of Hesse: •
Heinrich von Gagern (1799–1880) was a Hessian civil servant until his forced retirement in 1832. Gagern was one of the best-known opposition politicians in the German Confederation and was the most prominent advocate of a
constitutional monarchy for Germany. In 1847, he was a parliament member for
Lorsch in the Hessian Second Chamber. In 1848, he became President of the National Assembly, Prime Minister of the Reich and Prime Minister of the Grand Duchy of Hesse. •
Philipp Wilhelm Wernher (1802–1887) lived as a winegrower in
Nierstein. He had been a member of the Second Chamber of Hesse-Darmstadt since 1844. In 1848, he became a member of the National Assembly.
Participants from Nassau •
August Hergenhahn (1804–1874) was the only member of parliament from
Nassau's Second Chamber in Heppenheim. He was a judicial officer from
Wiesbaden, which he had represented as a parliament member since 1846. In 1848, he became Prime Minister of the
March Government of the Duchy.
Participants from Prussia •
David Hansemann (1790–1864) was a successful industrialist and banker from
Aachen. He was a member of the Rhenish provincial parliament from 1845. In 1848, Hansemann became finance minister in the Prussian March government. In 1851, he founded the
Disconto-Gesellschaft.
Participants from Württemberg Five deputies from Württemberg's
Second Chamber took part in the meeting in Heppenheim: •
Friedrich Federer (1799–1883) was co-owner of a bank in
Stuttgart. From 1845 to 1849, he was a member of the Württemberg Second Chamber. In 1848 he became a member of the National Assembly and in 1849, like Gagern and Soiron, was a delegate in the
Imperial Deputation. •
Karl August Fetzer (1809–1885) lived as a lawyer and judge in Stuttgart and was a member of the Second Chamber. In 1848 he became secretary of the Frankfurt National Assembly. •
Adolf Goppelt (1800–1875) ran a trading business in
Heilbronn. From 1839, he was a member of parliament for Heilbronn in the Second Chamber of Württemberg. In 1848, he was appointed Minister of Finance in the Württemberg March Government. •
Friedrich Römer (1794–1864) was a lawyer in Stuttgart and the nationally known leader of the liberal opposition in Württemberg's Second Chamber. In 1848, he became Minister of Justice in the Württemberg March Government. In 1849, he summoned the disintegrating National Assembly to Stuttgart as a rump parliament and shortly afterward used military force to ensure the final dissolution of the National Assembly. •
Wilhelm Murschel (1795–1869) also worked as a lawyer in Stuttgart. He was a deputy for
Rottweil in the Second Chamber and became a member of the Frankfurt National Assembly in 1848.
Outcome of the meeting The negotiations and results of the discussions at the Heppenheim meeting were mainly made public through a report by Mathys in the
Deutsche Zeitung on October 15, 1847. Other newspapers took over this information and thus ensured that the results of the Heppenheim conference were widely disseminated. The creation of this publicity was a special feature, as previous meetings had always been kept private for fear of state persecution. Bassermann saw this publication in particular as "the big difference between this meeting and the earlier ones at Hallgarten, in Saxony, etc." According to this newspaper report was However, the meeting went far beyond this topic, as it already paved the way for the
Heidelberg Assembly of the 51 and the Pre-Parliament through the desire for annual meetings. The negotiations and decisions of the Assembly focused primarily on creating a German national state and the representation of the people that this entailed. At the suggestion of Hansemann and Mathys, in particular, and against the initial resistance of Bassermann and Welcker, the participants wanted to achieve these "national issues" by extending the powers and creating a government for the
German Customs Union, which had existed since 1834, since "nothing fruitful could be expected from the
German Confederation". == Heppenheim Conference and Offenburg Assembly ==