Through Ampère, Ozanam had contact with leaders of the neo-Catholic movement, such as François-René de Chateaubriand, Jean-Baptiste Henri Lacordaire, and Charles Forbes René de Montalembert.

In 1832 Lammenais and his friends Lacordaire and Montalembert, visited Germany, obtaining considerable sympathy in their attempts to bring about a modification of the Roman Catholic attitude to modern problems and politico-liberal principles.

In order to defend the freedom of education, outside of the control of the universities, conforming to their interpretation of the Charter of 1830, the editors of “ L ’ Avenir ” founded in December 1830 the General Society for the defense of religious freedom, and on the 9 May 1831 Lacordaire and Montalembert opened a free school, rue des Beaux-Arts, which was shut down by the police two days later.

On the 30 December Lacordaire, Lamennais and Montalembert, the “ Pilgrims of Freedom ,” went to Rome so as to seek the recourse of Pope Gregory XVI, to whom they presented a dissertation composed by Lacordaire.

Lacordaire supported the Revolutions of 1848 in the Italian states and the later French invasion of the Papal States: " We must not at all be too alarmed by the possible fall of Pius IX ," he wrote to Montalembert.

He retired to La Chênaie and gathered a group of disciples, including Montalembert, Lacordaire and Maurice de Guérin.

In response, Lamennais, Montalembert and Lacordaire suspended their work and in November 1831 set out to Rome to obtain the approval of Pope Gregory XVI.

He travelled in Italy, sat under Schelling at Munich and under Ludwig Tieck at Dresden, became in 1835-36 a member of Madame de Circourt's salon, and numbered among his friends Alphonse de Lamartine, Jean-Baptiste Henri Lacordaire, Alfred de Vigny, Adolphe Thiers, François Guizot, Charles Forbes René de Montalembert, and Alexis de Tocqueville, of whose books, Démocratie en Amérique and the Ancien régime, he made standard translations into English.

The most prominent name identified with this new style of preaching was that of the Dominican Lacordaire, who, for a time, with Montalembert, was associate editor with de Lamennais of " L ' Avenir ".

In the following year Ozanam was sent to study law in Paris, where he fell in with the Ampère family ( living for a time with the mathematician André-Marie Ampère ), and through them with other leaders of the neo-Catholic movement, such as François-René de Chateaubriand, Jean-Baptiste Henri Lacordaire, and Charles Forbes René de Montalembert.

The movement of Liberal Catholicism was initiated in France by Hugues Felicité Robert de Lamennais with the support of Jean-Baptiste Henri Lacordaire, Charles Forbes René de Montalembert and Olympe-Philippe Gerbet, Bishop of Perpignan, while a parallel movement arose in Belgium, led by François Antoine Marie Constantin de Méan et de Beaurieux, Archbishop of Mechelen, and his vicar general Engelbert Sterckx.

In response, Lamennais, Montalembert and Lacordaire suspended their work and in November 1831 set out to Rome to obtain the approval of Pope Gregory XVI.

In 1863 he invited 100 theologians to meet at Mechelen and discuss the question which the liberals Lamennais and Lacordaire had raised in France, namely, the attitude that should be assumed by the Roman Catholic Church towards modern ideas.

He had eagerly entered into the plans of his friends, Lamennais and Lacordaire, and he collaborated with them in the newspaper, L ' Avenir.

The virulence of “ L ’ Avenir ,” and particularly of Lamennais and Lacordaire, provoked the French Bishops to form a tribunal against the editors of the periodical.

Lamennais and Lacordaire spent January 1831 before the court, and obtained a triumphal acquittal.

The son of a former doctor in the French navy, Henri Lacordaire was born on the 12 May 1802 at Recey-sur-Ource ( Côte-d ' Or ) and raised in Dijon by his mother, Anne Dugied, the daughter of a lawyer at the Parliament of Bourgogne who was widowed at an early age, when her husband died in 1806.

After a trial taking place in front of the Chambre des Pairs ( Chamber of Peers ,) where Lacordaire defended himself, but failed to prevent the permanent closure of the school, “ L ’ Avenir ” was suspended by its founders on the 15 November 1831.

Lacordaire ’ s first lecture took place on the 8 March 1835, and was met with wide acclaim.

However, Monseigneur de Quélen, the Archbishop of Paris, confirmed his support for Lacordaire, and asked him to preach a Lenten series in 1835 at the Cathedral of Notre-Dame in Paris, as part of the Notre-Dame Lectures specially aimed at the catechesis of Christian youth, which had also been inaugurated at the behest of his friend Ozanam.

Today the Lacordaire Notre-Dame Lectures, which mixed theology, philosophy and poetry, are still acclaimed as a sublime modern

Portraits from this period include the Portrait of the Reverend Father Dominique Lacordaire, of the Order of the Predicant Friars ( 1840 ), and The Two Sisters ( 1843 ), which depicts Chassériau's sisters Adèle and Aline.

His principal works are: A társadolom alapoloci ( The fundamental principles of human society ), Budapest, 1864 in which he develops the ideas of Lacordaire and others against modern errors.

The conferences of Notre-Dame-de-Paris were inaugurated by Père Lacordaire.

The cathedral is renowned for its Lent sermons founded by the famous Dominican Jean-Baptiste Henri Lacordaire in the 1860s.

Jean-Baptiste Henri-Dominique Lacordaire ( May 12, 1802 – November 21, 1861 ), often styled Henri-Dominique Lacordaire, was a French ecclesiastic, preacher, journalist and political activist.

Henri had three brothers, one of whom was the entomologist Jean Théodore Lacordaire.

At that time, Lacordaire was considering missionary work in the United States, but the revolutionary events of 1830 kept him in France.

Lacordaire particularly distinguished himself by writing articles asking for freedom of expression, freedom of the press, and freedom of education.

Even before this condemnation, Lacordaire distanced himself from his companions, and returned to Paris where he took up again his functions as a Chaplain at the Convent of Visitations.

Lacordaire, for his part, then further distanced himself from Lammenais, expressed his disappointment at the consequences of the Revolution of 1830, and proclaimed his continued faithfulness to the Church of Rome.

In January 1834, at the encouragement of the young Frédéric Ozanam, the founder the Society of Saint Vincent de Paul ( a charitable organization ,) Father Lacordaire started a series of lectures at the Collège Stanislas.

Lacordaire, aware of the need to continue his theological studies and reinforce his hierarchical alliances, retreated to Rome to study with the Jesuits.

In 1837, seeing the example of Guéranger's restoration of the Benedictines, Lacordaire decided to enter the Dominican Order despite the loss of certain personal freedoms that would entail, and to re-establish the Dominicans in France.

He, Lamennais, Olympe-Philippe Gerbet, and the young Viscount Charles de Montalembert, who became one of his closest friends, allied themselves with the July Revolution.

She was a Russian convert to Catholicism who had a famous salon in Paris which Montalembert, the Earl of Falloux, and the Reverend Father Félix Lamennais also frequented.

He prepared for death by retiring to his cave on the mountain-side overlooking the Trebbia, where, according to a tradition, he had dedicated an oratory to Our Lady ( Montalembert, " Monks of the West ", II, 444 ).

The army's very premise, to suppress Frederick, was found false-on being notified of his victory at on 5 November 1757, the Swedish commander Marshal Mattias Alexander von Ungern-Sternberg dared not obey the orders from his government and the French agent Marc René de Montalembert to lead his ill-equipped army in a march on Berlin, instead returning in November 1757 to Swedish Pomerania, where the Swedes were being besieged by the Prussians at Stralsund and Rügen.

Marc René, marquis de Montalembert ( 16 July 1714 – 29 March 1800 ) was a French military engineer and writer, known for his work on fortifications.

His forces, mainly Italian mercenaries, were ejected by a combined Franco-Scottish force under General D ’ Essé ( André de Montalembert, Sieur de Essé ) on June 19 or 29, 1549.

It met with great success, but Montalembert was not elected a member of the Académie française until after the fall of the July monarchy in 1851.