The name Edgard is of English origin, derived from the Old English words "ead" meaning "prosperous" or "wealthy" and "gar" meaning "spear." The name first appeared in the 9th century during the Anglo-Saxon period in England.

One of the earliest recorded uses of the name Edgard was in the Anglo-Saxon Chronicle, which documented events in early medieval England. The name was also mentioned in various historical documents and records from the time, indicating its popularity among the English nobility and aristocracy.

During the Middle Ages, the name Edgard was associated with several notable figures. One of the most famous was Edgard the Atheling, the last surviving male member of the Anglo-Saxon royal house of Wessex, who lived in the late 11th century. He was a contender for the English throne after the Norman Conquest but was ultimately passed over in favor of William the Conqueror.

Another significant historical figure bearing the name Edgard was Edgard of Aylesbury, a 13th-century English chronicler and historian who wrote about the reigns of King John and Henry III. His work, "The Chronicle of Edgard of Aylesbury," provides valuable insights into the political and social climate of medieval England.

In the 15th century, Edgard Plantagenet, a member of the influential Plantagenet dynasty, was a notable figure. He was the son of Richard, Duke of York, and played a role in the Wars of the Roses, a series of civil wars fought between the houses of Lancaster and York over the English throne.

Moving into the 16th century, Edgard Pole was a prominent English Catholic figure and the last Catholic Archbishop of Canterbury before the English Reformation. He was executed by King Henry VIII in 1558 for his opposition to the king's break from the Catholic Church.

The name Edgard continued to be used throughout the centuries, with various notable figures bearing the name. For example, Edgard Allan Poe, the renowned American writer and poet, was born in 1809 and is considered a pioneer of the short story genre and a master of the macabre and mysterious.