This is a list of states in the Holy Roman Empire beginning with the letter B. Some historians mark the beginning of the Empire as 800, with the coronation of Frankish king Charlemagne ("Charles the Great").
Name Type Imperial circle Imperial diet History Baar Landgraviate Swab 763: Gau county Bertholdsbaar1070: To Sulz1282: Sold to Austria1283: To Fürstenberg1806: To Baden Babenhausen Lordship1803: Principality n/a n/a 12th Century: To Schönegg as fief of Tübingen1378: Sold to Rechberg-Staufeneck1432: To Rechberg-Babenhausen1507: To Rechberg-Brandenburg1537: To Rechberg-Kellmünz1539: Sold to Fugger1560: To Fugger-Wöllenburg1598: To Fugger-Babenhausen1803: HRE Prince1806: To Bavaria Baden Margraviate Swab 9601190: Partitioned into Baden-Baden and Baden-Hachberg1771: Reunited by Baden-Durlach1803: HRE Elector1806: Joined Confederation of the Rhine as a Grand Duchy Baden-Baden Margraviate Swab PR 1190: Partitioned from Baden1291: Partitioned into itself, Baden-Eberstein and Baden-Pforzheim1335: Extinct; divided between Baden-Eberstein and Baden-Pforzheim1348: Partitioned from Baden-Pforzheim1515: Partitioned into itself, Baden-Durlach and Baden-Sponheim1536: Partitioned into itself and Baden-Rodemachern1588: Extinct; to Baden-Rodemachern1622: Partitioned from Baden-Durlach1771: Extinct; to Baden-Durlach Baden-Durlach Margraviate Swab PR 1515: Partitioned from Baden-Baden1577: Partitioned into itself, Baden-Hachberg and Baden-Sausenburg1771: Renamed to Baden Baden-Eberstein County Swab SC 1291: Partitioned from Baden-Baden1353: Extinct; to Baden-Pforzheim Baden-Hachberg (Baden-Hochberg) Margraviate Swab PR 1190: Partitioned from Baden1290: Partitioned into itself and Baden-Sausenburg1415: Extinct; to Baden-Baden1482: Partitioned from Baden-Baden1488: Extinct; to Baden-Baden1577: Partitioned from Baden-Durlach1591: Extinct; to Baden-Durlach Baden-Pforzheim Margraviate n/a n/a 1291: Partitioned from Baden-Baden1315: Partitioned into itself and Baden-Baden1361: Extinct; to Baden-Baden Baden-Rodemachern Margraviate n/a n/a 1537: Partitioned from Baden-Baden as fief of Luxembourg1575: Partitioned into itself and Baden-Rodenheim1596: Extinct; to Baden-Durlach1622: Partitioned from Baden-Durlach1666: Extinct; to Baden-Baden Baden-Rodenheim Margraviate n/a n/a 1575: Partitioned from Baden-Rodemachern1620: Extinct; to Baden-Durlach Baden-Sausenberg Margraviate n/a n/a 1290: Partitioned from Baden-Hachberg1503: Extinct; to Baden-Baden1577: Partitioned from Baden-Durlach1604: Extinct; to Baden-Durlach Baden-Sponheim Margraviate n/a n/a 1515: Partitioned from Baden-Baden1533: Extinct; to Baden-Baden Badenweiler Lordship n/a n/a 1028: First mentioned, property of the Zähringen1147: To Saxony11??: To Swabia1268: To Freiburg1272: Partitioned from Freiburg1303: Extinct; to Strasberg1385: To Freiburg1444: To Baden-Sausenberg1503: Inherited by Baden-Baden BaindtAbbacy Swab SP 1240: Abbey established1376: Imperial immediacy; HRE Princess1802: Secularised to Leyden1803: To Aspremont-Lynden1806: To Württemberg BambergBishopric Franc EC 1007: Diocese established 1242: HRE Prince of the Empire1802: To Bavaria Bar (Bar-le-Duc; Barrois; Mass; Meuse) County1354: Duchy Upp Rhen PR 959: To Lorraine (Upper Lotharingia)1033: Partitioned from Lorraine1301: Western half made fief of France1354: Duke in France; HRE Margrave1506: In personal union with Lorraine1634-1659, 1670–1697, 1702–1714: To France1766: To France permanently Barby Lordship1497: County Upp Sax WT 974: To Quedlinburg Abbey12th Century: To Arnstein1226: Partitioned from Arnstein1497: HRE Count1565: Partitioned into Barby-Barby and Barby-Mühlingen1651: Reunited by Barby-Mühlingen1659: Extinct; to Saxony Barby-Barby County Upp Sax WT 1565: Partitioned from Barby1651: Extinct; to Barby-Mühlingen Barby-Mühlingen County Upp Sax WT 1565: Partitioned from Barby1651: Renamed to Barby Barmstedt (Barmstede) Lordship n/a n/a 1149: First mentioned 1375: Extinct; to Holstein-Schaumburg1640: To Schleswig-Holstein-Gottorp1649: Sold to Rantzau1721: To Denmark BaselBishopric Upp Rhen EC 740: Diocese established999: Acquired immediate territory1032: HRE Prince of the Empire1579: Allied to the Swiss Confederation1792: Left-bank territories annexed to the Rauracian Republic1803: Right-bank territories secularised and ceded to Baden BaselImperial City n/a n/a 1392: Acquired semi-independence; Free Imperial City1501: Joined the Swiss Confederation1648: Left the Empire as part of Switzerland Bassenheim Lordship1729: Barony Originally to Isenburg-Braunsberg as fief of Cologne13th Century: To Waldbott von Waltmannshausen as fief of Cologne1337: To Waldbott von Bassenheim as fief of Cologne1729: Imperial immediacy; HRE Baron1794: To France1815: To Prussia Battenburg County n/a n/a 1101: First mentioned1238: Partitioned into itself and Wittgenstein1291: Half sold to Mainz1296: Remainder sold to Mainz1310: Extinct1464: Sold to Hesse Baumburg (Baumberg; Naumburg) Raugraviate n/a n/a 1148: Partitioned from the Wildgraviate1172: Partitioned into Stolzenberg and itself1253: Partitioned into Neuenbaumburg and Altenbaumburg Bavaria (Bayern) Duchy1623: Electorate1806: Kingdom Bav EL 520: First mentioned1185: Acquired the Burgraviate of Regensburg1214: Acquired the County Palatine of the Rhine1255: Partitioned into Upper and Lower Bavaria1340: Reunited by Upper Bavaria1349: Partitioned into Brandenburg, Upper Bavaria and Lower Bavaria1505: Reunited by Bavaria-Munich1545: Bavaria reunited after many divisions1623: HRE Elector; Acquired Upper Palatinate1646: Side line Bavaria-Leuchtenberg founded1806: Joined the Confederation of the Rhine as Kingdom Bavaria-Dachau Duchy Bav PR 1467: Partitioned from Bavaria-Munich1501: Extinct; to Bavaria-Munich Bavaria-Haag Duchy Bav PR 1650: Created when Albert VI of Bavaria-Leuchtenberg acquired Haag1666: Extinct; to Bavaria Bavaria-Ingolstadt Duchy n/a n/a 1392: Partitioned from Bavaria-Landshut1445: Extinct; to Bavaria-Landshut Bavaria-Landshut Duchy Bav PR 1353: Partitioned from Lower Bavaria1392: Partitioned into Bavaria-Ingolstadt, Bavaria-Landshut and Bavaria-Munich1503: Extinct; succession dispute between Bavaria-Munich and Palatinate-Neuburg1505: Annexed to Bavaria-Munich Bavaria-Leuchtenberg Duchy Bav PR 1646: Created when Albert VI of Bavaria acquired Leuchtenberg1650: Exchanged with Maximilian to form Bavaria-Haag1680: Extinct; to Bavaria Bavaria-Munich Duchy n/a n/a 1392: Partitioned from Bavaria-Landshut1467: Partitioned into Bavaria-Munich and Bavaria-Dachau1505: Became D. of Bavaria Bavaria-Straubing Duchy Bav PR 1353: Partitioned from Lower Bavaria1425: Extinct; divided between Bavaria-Ingolstadt, Bavaria-Landshut and Bavaria-Munich BeckenriedAbbacy Swab SP 1521: Identified in the Reichsmatrikel 1521 as an Imperial Abbey, but the house has not been identified. Assumed to be at Beckenried, Nidwalden Beichlingen Lordship Upp Sax WE 1014: First mentioned1275: Partitioned into Beichlingen-Beichlingen and Beichlingen-Rothenburg1360: Reunited by Beichlingen-Beichlingen1519: Sold Beichlingen to Werthern; remaining territories as fief to Saxony1567: Extinct Beichlingen-Beichlingen Lordship n/a n/a 1275: Partitioned from Beichlingen1320: Partitioned into itself and Beichlingen-Sachsenfeld1330: Sold Heringen to Hohnstein-Klettenberg1360: Renamed to Beichlingen Beichlingen-Rothenburg Lordship n/a n/a 1275: Partitioned from Beichlingen1360: Extinct Beichlingen-Sachsenfeld Lordship n/a n/a 1275: Partitioned from Beichlingen-Beichlingen1345: Extinct; to Beichlingen-Beichlingen Beilstein Lordship1679: County El Rhin WE 1268: First mentioned; fief of Cologne1361: Extinct1363: To Winneburg as fief of Cologne1637: To Metternich1679: HRE Count1794: To France1815: To Prussia BentheimCount of Bentheim, Tecklenburg, Steinfurt & Limburg, Lord of Rheda, Wevelinghoven, Hoya, Alpen, Helpenstein, Baron of Lennep, Hereditary Advocate of Cologne Lordship1530: County Low Rhen WE 1050: First mentioned1115: To Otto of Salm1146: Made fief of Utrecht1182: Imperial immediacy1263: Acquired Tecklenburg1279: Partitioned into Tecklenburg and Bentheim1421: To Götterswyk who assumed the name Bentheim1454: Partitioned into Bentheim-Steinfurt and Bentheim-Bentheim1530: Reunited by Bentheim-Steinfurt1606: Partitioned into Bentheim-Tecklenburg-Rheda, Bentheim-Steinfurt, and appanages Bentheim-Limburg and Bentheim-Alpen Bentheim and Steinfurt County Low Rhen WE 1804: Renamed from Bentheim-Steinfurt1806: Bentheim to Berg, Steinfurt to Prussia Bentheim-Alpen County n/a n/a 1606: Appanage created in Bentheim-Steinfurt and Neuenahr1629: Extinct; apanage abolished Bentheim-Bentheim Lordship1486: HRE Count Low Rhen WE 1454: Partitioned from Bentheim1486: HRE Count1530: Extinct; to Bentheim-Steinfurt1643: Partitioned from Bentheim-Steinfurt1753: Mortgaged to Hanover1803: To Bentheim-Steinfurt1804: Extinct Bentheim-Limburg County n/a n/a 1606: Appanage created in Bentheim-Steinfurt and Neuenahr1618: Extinct; to Bentheim-Alpen Bentheim-Steinfurt Lordship1486: County Low Rhen WE 1454: Partitioned from Bentheim1486: County1530: Renamed to Bentheim1606: Partitioned from Bentheim1643: Partitioned into itself and Bentheim-Bentheim1804: Renamed to Bentheim and Steinfurt Bentheim-Tecklenburg Lordship n/a n/a Name sometimes given to the County of Tecklenburg under the rule of the Bentheim 1277 - 1328 Bentheim-Tecklenburg-Rheda County Low Rhen WE 1606: Partitioned from Bentheim-Steinfurt1696: Tecklenburg to Solms-Braunfels1807: To Berg BentinckHRE Count of Bentinck and Aldenburg, Lord of the free Lordship of Knyphausen, Noble Lord of Varel Lordship1732: County n/a n/a 1343: First mentioned1732: HRE Count1738: Acquired Knyphausen and Varel1810: To France1814: To Oldenburg BerchtesgadenPrince, Provost and Lord of BerchtesgadenAbbey1491: Provostry Bav EC 1108: Abbey established1194: Imperial immediacy1380: HRE Prince1491: Converted to a Provostry1559: Raised to Bench of Spiritual Princes1803: To Salzburg1805: To Austria1809: To Bavaria Berg County1380: Duchy Low Rhen PR 1077: First mentioned; branch of the Ezzonen1160: Partitioned into itself and Berg-Altena1218: To Limburg1247: Partitioned from Limburg1380: Duchy1423: To Jülich-Berg1521: To Jülich-Cleves-Berg1609: War of the Jülich Succession between Brandenburg and Palatinate-Neuburg1614: To Palatinate-Neuburg1685: To the Palatinate1777: To Bavaria1806: To Berg1815: To Prussia Berg-Altena County n/a n/a 1161: Partitioned from Berg1180: Partitioned into Altena-Isenberg and Altena-Berg Bern (Berne)Imperial City n/a n/a 1218: Free Imperial City1353: Joined the Swiss Confederation1415: Acquired Aargau1536: Acquired Vaud1648: Left the Empire as part of Switzerland BesançonArchbishopric Upp Rhen EC 4th Century: Diocese established1184: Acquired Besançon; imperial immediacy1288: HRE Prince of the Empire1493: Lost Besançon; retained seat in the Imperial Diet until 18031678: To France BesançonImperial City Burg n/a 1290: Free Imperial City; semi-independent from the Archbishopric of Besançon1493: Acquired complete independence1648: To the Free County of Burgundy1678: To France Biberach an der RißImperial City Swab SW 1281/2: Free Imperial City1803: To Baden1806: To Württemberg Biberbach Lordship n/a n/a 1279: Partitioned from Pappenheim1514: Sold to Fugger1624: Extinct Billung March (Billunger Mark) Margraviate n/a n/a 928: March established983: Conquered by the Obotrites Bilstein in Franconia County n/a n/a 1130: Lordship founded by descendants of the Margraves of Zeitz1301: Sold to Hesse1306: Extinct BlankenburgAbbacy Low Rhen RP 1521: Identified in the Reichsmatrikel 1521 as an Imperial Abbey, but the house has not been identified Blankenburg County (1123)1707: Principality of Imperial immediacy Low Sax WE 1123: First mentioned; fief of Saxony 1162: Partitioned into itself and Regenstein1180: Fief of Halberstadt1202: Fief of Brunswick and Lüneburg1344: Fief of Halberstadt1368: Extinct; to Regenstein-Blankenburg1599: To Halberstadt1624: To Ma