Conrad von Bibra (or Konrad III von Bibra), Duke in Franconia (1490–1544) was Prince-Bishop of Würzburg from 1540 to 1544.
Born in 1490, he studied at the universities of Cologne, Bologna, Erfurt and Ingolstadt. His whole life Conrad seemed to have had a hard time making up his mind about being a priest. Three times between 1520 and 1532 he entered a priestly position and then resigned. In 1525 during the German Peasants' War, Conrad was among the defenders of the Fortress Marienberg at Würzburg which was under siege. Afterwards he served on the commission determining damages. Finally in February 1539 he entered a priestly position again. On 28 April 1540 he became Provost of Neu Münster in Würzburg. Already on 1 July 1540, he was surprisingly elected Prince Bishop. Afterwards he showed an independent even uncooperative attitude. Seven times he put off his ordination as a priest and bishop. Also despite the Emperor's admonitions, he gave excuses and refused to personally attend meetings of the Imperial Diet.
The Bibra family was one of the leading Uradel (ancient noble) families in Franconia (northern part of Bavaria) and Thuringia from the mid-15th century to about 1600. Later on the family rose from Reichsritter (Imperial Knights) to Reichsfreiherr (Barons of the Holy Roman Empire). After the Holy Roman Empire dissolved, they were made ‘’Freiherr’‘ (Barons) of Bavaria and Bohemia.
The earliest references to the family include a document of Bishop Otto of Bamberg from the year 1119 of a Rupertus de Bibra. In 1151 a Pertholdus (Berthold) de Bibra and his sons Pertholdus (Berthold) and Tagino are referenced in another document. The family prospered in numbers, wealth, and influence in the 15th century and early 16th century. By the time of Siebmachers Wappenbuch of 1605, the family is listed as the most important family of Franconia under the rank of Freiherr. By 1600 most of the family died off without heirs partially due natural causes such as the Bubonic plague and the number of family members who took church positions. After the death of Heinrich von Bibra in 1602, the Prince-Bishop Julius Echter von Mespelbrunn seized most of the family’s assets as part of the Counter-Reformation resulting in a 79 year lawsuit. The lawsuit (Reichskammergericht) was eventually settled with the family receiving all the properties except Burgwallbach but without income during the suit. From 1602 on there were many important members of the family but the family itself never recovered the leading position it previously had in the late 15th and 16th centuries. Between 1698 and 1772, the various lines were raised to Reichsfreiherr (Barons of the Holy Roman Empire). In later times, the family spread to the Austrian Empire, the British Empire, and the United States. According to Wagenhöfer, the Bibra family is the most researched family of the low nobility in Franconia after the Guttenberg and Seckendorff families.