The lords of Beaugency attained considerable importance in the 11th, 12th and 13th centuries; at the end of the 13th century they sold the fiefdom to the Crown. They were responsible for building Château de Beaugency, which as originally a wooden structure, later replaced with a stone one by Lancelin I de Beaugency, the first lord of Beaugency. The massive original keep is today a ruined shell, surrounded by a mansion built later on in the 14th century.
Between 1067-1069 Lancelin II succeeds his father as the second lord of Beaugency. In 1080 he goes on a pilgrimage to Rome and his son, Ralph ruled the lordship of Beaugency in his absence.
In 1091 the third lord of Beaugency is Ralph I (1065-1130) who took part in the First Crusade as a retainer in the forces of Stephen, Count of Blois, (father of Stephen, King of England) who he was listed as 'one of his best men'. Ralph became known for his bravery in defending an important gate during the siege of Antioch in the Spring of 1098. He returned from Crusade in 1101 and marries Mathilda of Vermandois, daughter of Hugh the Great and niece to the king of France.
Following this union, the Beaugency lords adopted Coat of arms similar to that of Vermandois - Chequy or and azure, a fesse gules (very similar to the de Clifford family) and 3 white Plate Roundels. This practice was also carried out by other prominent noble families including de Beaumont and de Warenne.
Afterward it passed to the house of Orléans, then to those of Dunois and Longueville, and ultimately again to that of Orléans.[3]
The city of Beaugency has been the site of numerous military conflicts. It was occupied on four separate occasions by the English. On 16–17 June 1429, it was the site of the famous Battle of Beaugency, when it was freed by Joan of Arc. Beaugency also played an important strategic role in the Hundred Years' War. It was burned by the Protestants in 1567 and suffered extensive damage to the walls, the castle, and the church.
In 1940 and again in 1944, the city was bombed by Nazi Germany. On 16 September 1944, German Major General Botho Henning Elster and his 18 850 men and 754 officers surrendered at the Loire bridge of Beaugency to the U.S. Army after being harassed and surrounded by the French Résistance.
Until 1846 Beaugency was an important commercial center due to trade along the Loire. After trade moved from the river to rail traffic, the city's role changed. Beaugency became a market center for the surrounding agricultural district. Today Beaugency's economy depends largely on tourism.