Countess of Brunswick Lüneburg became a part of the County after Emperor Lothair, who inherited it from the Billungs. Picture Name Father Birth Marriage Became Countess Ceased to be Countess Death Spouse Gisela of Swabia Hermann II, Duke of Swabia(Conradines)11 November 995 1003/051010/11husband's death 14 February 1043 Brun I Gertrude of Egisheim Hugo VI, Count of Nordgay(Etichonids)-before 102523 Apr 1038husband's death 21 July 1077 Liudolf I Aemilia of SusaUlric Manfred II of Turin(Arduinici)-105811 January 1068husband's death 28 January 1078 Egbert IOda of Weimar Otto I, Margrave of Meissen -before 10803 July 1090husband's death 1111Egbert IIGertrude of Brunswick Egbert I, Margrave of Meissen(Brunonen)1060 after 10853 July 1090husband's accession1101husband's death 9 December 1117 Henry the FatRichenza of Northeim Henry the Fat(Northeim)1087/89 1100 1101husband's accession4 December 1137husband's death 10 June 1141 Lothair of SupplinburgbGertrude of Süpplingenburg Lothair of Supplinburg(Süpplingenburg)18 April 111529 May 11274 December 1137husband's accession20 October 1139husband's death18 April 1143Henry the ProudClementia of ZähringenConrad, Duke of Zähringen(Zähringen)-1148/4923 November 1162divorce1148/49 Henry the LionMatilda of England Henry II of England(Plantagenet)June 1156 1 February 1168 28 June 1189Agnes of HohenstaufenConrad, Count Palatine of the Rhine(Hohenstaufen) 1176December 1193/January 11941203Division of Duchy9/10 May 1204Henry the Tall Agnes of WettinConrad II, Margrave of Lower Lusatia(Wettin) -121128 April 1227husband's death1 January 1248Beatrice of HohenstaufenPhilip of Swabia(Hohenstaufen) April/June 1198 23 July 1212 11 August 1212Otto the ProudMarie of BrabantHenry I, Duke of Brabant(Leuven) 1190 after 19 May 1214 19 May 1218husband's death9 March/14 June 1260Helena Valdemarsdatter of DenmarkValdemar I of Denmark(Estridsen) 1175/82Summer of 1202 1203Division of Duchy13 December 1213husband's death22 November 1233William of WinchesterMatilda of BrandenburgAlbert II, Margrave of Brandenburg(Ascania) 1210end of 1228August 1235Became Duchess10 June 1261Otto the Child
Duchess of Brunswick-Lüneburg
Main line Picture Name Father Birth Marriage Became Duchess Ceased to be Duchess Death SpouseMatilda of BrandenburgAlbert II, Margrave of Brandenburg(Ascania) 1210end of 1228August 1235Duchy's creation9 June 1252husband's death10 June 1261Otto IElisabeth of BrabantHenry II, Duke of Brabant(Leuven) 124313 July 125417 April/9 October 1261Albert IAlessia of MontferratBoniface II, Marquess of Montferrat(Aleramici) 1240 1 November 12661269Duchy's partitioned, husband received Wolfenbüttel6 February 1285Liutgatd of HolsteinGerhard I, Count of Holstein-Itzehoe(Schauenburg) 12511265, after 15 July1269Duchy's partitioned, husband received Lüneburgafter 28 February 1289John I Albert (Wolfenbüttel line) ruled the duchy jointly with his younger brother John (Lüneburg-Celle line). As the brothers could not agree on how to govern the duchy, in 1267 they decided to divide their possession, which happened in 1269. Albert partitioned the territory while John obtained the right to choose his part. He took the northern half including the cities of Lüneburg and Hanover while Albert received the southern part, including Calenberg, Helmstedt, the Harz mountain range and Göttingen. The City of Brunswick was to remain common property of the brothers.
Wolfenbüttel line Picture Name Father Birth Marriage Became Duchess Ceased to be Duchess Death SpouseAlessia of MontferratBoniface II, Marquess of Montferrat(Aleramici) 1240 1 November 12661269Duchy's partitioned, husband received Wolfenbüttel15 August 1279husband's death6 February 1285Albert I Agnes of MeissenAlbert II, Margrave of Meissen(Aleramici) before 12641282, before 21 July1291Duchy's partitioned, husband received Grubenhagen1 February/September 1332Henry I Rixa of Mecklenburg-WerleHenry I, Prince of Mecklenburg-Werle(Mecklenburg-Werle) -10 January 12841291Duchy's partitioned, husband received Göttingenafter 2 October 1312Albert II (1st reign)Elisabeth of HesseHenry I, Landgrave of Hesse(Hesse) 1276129030 September 1292husband's deathafter 6 July 1306William I Rixa of Mecklenburg-WerleHenry I, Prince of Mecklenburg-Werle(Mecklenburg-Werle) -10 January 128430 September 1292husband's reaccessionafter 2 October 1312Albert II (2nd reign)Agnes of Brandenburg Hermann, Margrave of Brandenburg(Ascania)1296/98 16 September/22 December 131928 November 1334Otto ISophie of Brandenburg Henry I, Margrave of Brandenburg(Ascania)130013271356Magnus IElisabeth of Hesse Henry II, Landgrave of Hesse(Hesse)1329before 2 March 134017 April 1345Duchy's partitioned, husband received Göttingen7 March 1390Ernest ICatherine of Anhalt Bernhard III, Prince of Anhalt-Bernburg(Ascania)1330 before 6 October 135615 June/15 August 1369husband's accession26 July 1373husband's death30 January 1390Magnus IIAnna of Saxe-Wittenberg Wenceslas I, Duke of Saxe-Wittenberg(Ascania)-10 November 13865 June 1400husband's deathafter 18 April 1426Frederick IAfter Frederick I's murder in 1400, Wolfenbüttel was inherited by the two brothers: Bernard I and Henry II, who were joint rulers of Lüneburg. The two brothers agreed in 1409 that they would divide the Duchies with Henry receiving Lüneburg and Bernard receiving Wolfenbüttel.Margaret of Saxe-Wittenberg Wenceslas I, Duke of Saxe-Wittenberg(Ascania)-12 July 13855 June 1400husband's accession12 June 1418Bernard ISophie of Pomerania Wartislaw VI, Duke of Pomerania(Griffins)-11 November 13885 June 1400husband's accession28 June 1406Henry IIMargaret of Hesse Hermann II, Landgrave of Hesse(Hesse)138930 January 14091409husband relinquish claim Wolfenbüttel for Lüneburg1446In 1428, a second treaty between Bernard I and his nephews William III and Henry III of Lüneburg. Bernard swapped Wolfenbüttel for Lüneburg.Cecilia of BrandenburgFrederick I, Elector of Brandenburg(Hohenzollern)1405 30 May 14231428husband relinquish claim Lüneburg for Wolfenbüttel1432husband's deposition in Wolfenbüttel and given Calenberg4 January 1449William III(1st reign)Helene de ClèvesAdolph I, Duke of Cleves(De la Marck)18 August 1423 12 February 14363 July 1471Henry IIIElisabeth of StolbergBodo VII, Count of Stolberg-Wernigerode143826 November 1444 25 July 1482husband's accession1491husband relinquish Wolfenbüttel and Calenberg to sons, retaining Göttingen7 September 1520William IV Margaret of RietbergConrad V, Count of Rietberg -16 November 148325 July 1482husband's accession1484 husband's imprisonment4 January 1533 or 6 June 1535Frederick IIICatherine of Pomerania-Wolgast Eric II, Duke of Pomerania(Griffins)-1465 7 December 1473husband's accession23 June 1514husband's death1526Henry IVMarie of Württemberg Henry, Count of Württemberg(Württemberg)15 August 149618 February 1515 28 December 1541Henry VSophia Jagiellon of Poland Sigismund I the Old(Jagiellon)13 July 1522 22–25 February 1556 3 May 1589husband's death28 May 1575 Hedwig of BrandenburgJoachim II Hector, Elector of Brandenburg(Hohenzollern)2 March 1540 25 February 156011 June 1568husband's accession3 May 1589husband's death21 October 1602JuliusElizabeth of Denmark Frederick II of Denmark(Oldenburg)2 March 1540 25 February 156011 June 1568husband's accession3 May 1589husband's death21 October 1602Henry JuliusAnna Sophia of Brandenburg John Sigismund, Elector of Brandenburg(Hohenzollern)15 March 1598 4 September 1614 11 August 1634husband's death19 December 1659Frederick UlrichDorothea of Anhalt-ZerbstRudolph, Prince of Anhalt-Zerbst(Ascania)25 September 1607 26 October 162311 August 1634husband's accession26 September 1634Augustus IIElisabeth Sophie of Mecklenburg-GüstrowJohn Albert II, Duke of Mecklenburg(Mecklenburg-Güstrow)20 August 1613 13 July 1635 17 September 1666husband's death2 July 1676Christiane Elisabeth von Barby Albert Frederick, Count of Barby-Muhlingen6 October 1634 10 November 1650 17 September 1666husband's accession2 May 1681Rudolph AugustusElisabeth Juliane of Schleswig-Holstein-Sonderborg-Norburg Frederick, Duke of Schleswig-Holstein-Sonderborg-Norburg(Schleswig-Holstein-Sonderborg-Norburg)24 May 163417 May 1656 17 September 1666husband's accession4 February 1704Anthony UlrichChristine of Hesse-Eschwege Frederick, Landgrave of Hesse-Eschwege(Hesse-Eschwege)30 October 164826 November 1667 1667relinquish claim to Wolfenbüttel for Bevern18 March 1702Ferdinand Albert IElisabeth Sophie Marie of Schleswig-Holstein-Sonderborg-Norburg Prince Rudolph Frederick Schleswig-Holstein-Sonderborg-Norburg(Schleswig-Holstein-Sonderborg-Norburg)12 September 168312 September 171027 March 1714husband's accession23 March 1731husband's death3 April 1767Augustus WilliamChristine Louise of Oettingen-Oettingen Albert Ernest I, Prince of Oettingen-Oettingen(Oettingen-Oettingen)20 March 1671 12 September 171023 March 1731husband's accession1 March 1735husband's death3 September 1747Louis RudolphAntoinette Amalie of Brunswick-Lüneburg Louis Rudolph, Duke of Brunswick-Lüneburg(Welf)22 April 169615 October 1712 1 March 1735husband's accession2 September 1735husband's death6 March 1762 Ferdinand Albert IIPhilippine Charlotte of Prussia Frederick William I of Prussia(Hohenzollern)13 March 1716 2 July 1733 2 September 1735husband's accession26 March 1780husband's death17 February 1801Charles IAugusta of Great Britain Frederick, Prince of Wales(Hanover)31 August 1737 16 January 1764 26 March 1780husband's accession16 October 1806husband's death23 March 1813Charles IIMarie of Baden Charles Louis, Hereditary Prince of Baden(Zähringen)7 September 1782 1 November 1802 16 October 1806husband's accession1807Wolfenbüttel annexed by Napoleon29 April 1808Frederick WilliamBecame part of Kingdom of Westphalia (1807–1813)Reformed into the Duchy of Brunswick in 1814.
Grubenhagen line