The given name Eduardo has its origins in the Germanic languages, derived from the Old English words "ead" meaning "prosperous" or "rich," and "weard" meaning "guard" or "protector." The name can be interpreted as "prosperous guardian" or "wealthy protector."

In its earliest recorded use, the name appeared as "Eadweard" in Anglo-Saxon England during the 9th century. Over time, the spelling evolved, and the name spread across Europe, particularly in regions influenced by the Norman conquest of England in the 11th century.

One of the earliest recorded individuals with the name Eduardo was Eduardo the Martyr, an English king who ruled from 975 to 978 CE. He was canonized as a saint by the Catholic Church for his pious life and untimely death at the hands of his stepmother.

During the Middle Ages, the name gained popularity in Spain and Portugal, where it was adopted as "Eduardo." This Spanish and Portuguese variant became widely used, especially among the nobility and ruling classes.

In the 14th century, Eduardo I, also known as Edward I of England, was a notable figure who bore this name. He reigned from 1272 to 1307 CE and played a crucial role in the conquest of Wales and the establishment of parliamentary government in England.

Another prominent individual with the name Eduardo was the Portuguese explorer and navigator Eduardo Fernandez, who lived in the 15th century. He is credited with being one of the first Europeans to explore the African coast, paving the way for future maritime expeditions.

In the realm of literature, the Spanish poet and playwright Eduardo Marquina (1879-1946) made significant contributions to the literary world. His works, such as "En Flandes se ha puesto el sol" (The Sun Has Set in Flanders), earned him widespread recognition and praise.

One of the most famous historical figures with the name Eduardo was Eduardo VII, the King of the United Kingdom from 1901 to 1910. His reign marked a period of social and political reform, and he played a crucial role in strengthening the constitutional monarchy.