Despite the 1891 discovery by Eugène Dubois of what is now called Homo erectus at Trinil, Java, it was only in the 1920s when such fossils were discovered in Africa, that intermediate species began to accumulate.

Fossilised remains of Homo erectus, popularly known as the " Java Man " were first discovered by the Dutch anatomist Eugène Dubois at Trinil in 1891, and are at least 700, 000 years old, at that time the oldest human ancestor ever found.

* October – Eugène Dubois finds the first fragmentary bones of Pithecanthropus erectus ( later redesignated Homo erectus ), or ' Java Man ', at Trinil on the Solo River.

* Eugène Dubois, ( 1858 – 1944 ), paleontologist & anatomist

Marie Eugène François Thomas Dubois ( 28 January 1858 – 16 December 1940 ) was a Dutch paleoanthropologist and geologist.

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Eugène Dubois ' ( 1858 – 1940 ) discovery in 1891 in Indonesia of the " Java Man ", the first specimen of Homo erectus to be discovered, demonstrated mankind's deep ancestry outside Europe.

The search for a fossil showing transitional traits between apes and humans, however, was fruitless until the young Dutch geologist Eugène Dubois found a skullcap, a molar and a femur on the banks of Solo River, Java in 1891.

Its discoverer, Eugène Dubois, gave it the scientific name Pithecanthropus erectus, a name derived from Greek and Latin roots meaning upright ape-man.

* Eugène Dubois ( 1858 – 1940 ), anthropologist

In Harvard Motherwell studied under Arthur Oncken Lovejoy and David White Prall ; to research the writings of Eugène Delacroix he spent a year in Paris where he met an American composer Arthur Berger.

Upon his entrance into the University, he met Eugène Ionesco and Mircea Eliade, the three of them becoming lifelong friends.

It continued to flourish during the 19th century, and, particularly under the direction of chemist Michel Eugène Chevreul, became a rival to the University of Paris in scientific research.

Paul Signac and Color in Neo-Impressionism, including the first English edition of From Eugène Delacroix to Neo-Impressionism ( New York: Rockefeller University Press, 1992 )

* Pendle, Karin: Eugène Scribe and French Opera in the Nineteenth Century, UMI Research Press, Ann Arbor, 1979 ISBN 978-0-8357-1004-6

* April 26 – Eugène Delacroix, French painter ( d. 1863 )

Edmond Eugène Alexis Rostand (; 1 April 1868 – 2 December 1918 ) was a French poet and dramatist.

Popular anger at shortages in Conakry was entwined with anti-government protests, strikes, and violence over the rule of President Lansana Conté and the successive prime ministers, Cellou Dalein Diallo and Eugène Camara, appointed to fill the post after the resignation of Prime Minister François Lonseny Fall in April 2004.

However, in April Bizet received an offer, which originated from Count Walewski, to write a three-act opera, Les pêcheurs de perles, using a libretto by Michel Carré and Eugène Cormon.

Ferdinand Victor Eugène Delacroix (; 26 April 1798 – 13 August 1863 ) was a French Romantic artist regarded from the outset of his career as the leader of the French Romantic school.

Edouard Guillaume Eugène Reuss ( July 18, 1804 – April 15, 1891 ), was a Protestant theologian from Alsace.

Eugène Henri Brisson (; 31 July 183514 April 1912 ) was a French statesman, Prime Minister of France for a period in 1885-1886 and again in 1898.

Michel Eugène Chevreul ( 31 August 1786 – 9 April 1889 ) was a French chemist whose work with fatty acids led to early applications in the fields of art and science.

Eugène Auguste Ernest Havet ( April 11, 1813 – December 21, 1889 ), French scholar, was born in Paris.

Paul Eugène Louis Deschanel (; 13 February 1855, Schaerbeek – 28 April 1922 ) was a French statesman.

Eugène Burnouf ( April 8, 1801 – May 28, 1852 ) was an eminent French scholar and orientalist who made significant contributions to the deciphering of Old Persian cuneiform.

* April 26 – Eugène Albert, woodwind instrument maker ( d. 1890 )

Eugène Rambert ( April 6, 1830 – November 21, 1886 ), was a Swiss author.

Eugène Bellemare ( born April 6, 1932 in Ottawa, Ontario, Canada ) is a Canadian politician.

After a brief romance with the artist Jean Cocteau, Marie-Laure Bischoffsheim married, in 1923, Charles, Vicomte de Noailles ( 26 September 1891-28 April 1981 ), a son of François Joseph Eugène Napoléon de Noailles, grandson of Antonin-Just-Léon-Marie de Noailles and younger brother of the 6th Duc de Mouchy ( father of Philippe François Armand Marie de Noailles ), himself a cadet of the French ducal house of Noailles.

The Austrians beat back several bungled French assaults at the Battle of Sacile in April, causing Eugène to fall back on Verona and the Adige River, but Eugène regrouped and launched a more mature offensive that expelled the Austrians from Northern Italy again.

The Battle of Sacile ( also known as the Battle of Fontana Fredda ) on 16 April 1809 and its companion Clash at Pordenone on 15 April saw an Austrian army commanded by Archduke John of Austria defeat a Franco-Italian army led by Eugène de Beauharnais and force it to retreat.

By the end of April, news of French victories in the Danube valley caused John to fall back to the east, with Eugène in pursuit.

By 14 April, Eugène massed six divisions near Sacile with Lamarque's infantry and General of Division Charles Randon de Pully's dragoons still distant.

On 15 April, Eugène ordered his army forward across the Livenza.

When the Army of Inner Austria arrived near Verona on 28 April, it found Eugène in a strong defensive position behind the Adige.

The next engagements between John and Eugène were the Battle of Caldiero in the last days of April and the Battle of Piave River on 8 May.