Below is a list of all the rulers of Brunswick-Luneberg. Please feel free to let me know of any information I am missing or is incorrect. You can contact me at kcrossno at seekingallancestors.com.

House of Brunswick-Luneburg

House of Welf - Dukes of Brunswick-Luneburg

Reigned	Name / Notes
1235-1252	Otto I, the Child (gson of Henry XII of Bavaria; made Duke of Brunswick and Luneburg 1235)

Old Line of Luneburg

1252-1277	John (son; received Luneburg by partition 1267)
1277-1330	Otto II, the Severe (son)
1330-1352	Otto III (son)
1330-1369	William (brother; Luneburg succession in dispute 1369-88)

Old Line of Brunswick

1252-1279	Albert I, the Great (son of Otto I; Brunswick 1267)
1279-1286	Henry the Singular (son; Grubenhagen 1286-1322)
1279-1292	William (brother; Brunswick 1286)
1279-1318	Albert II, the Fat (brother; Gottingen 1286; Brunswick 1292)
1318-1344	Otto the Mild (son)
1344-1345	Ernest (brother; Gottingen 1345-67)
1344-1369	Magnus I, the Pious (brother; Brunswick 1345)
1369-1373	Magnus II, the Younger (son; co-regent 1345)
1373-1400	Frederick (son; union of Brunswick w/ Luneburg 1400)

Middle Line of Luneburg

1388-1416	Henry I (brother; shared Luneburg 1388; shared Brunswick 1400; received Luneburg by partition 1409)
1416-1428	William I, the Victorious (son; Brunswick 1428)
1428-1434	Bernard I (son of Magnus II; Brunswick 1409-28)
1434-1441	Frederick the Pious (son; abdicated)
1434-1446	Otto I, the Lame (brother)
1446-1458	Frederick the Pious (again; abdicated, died 1478)
1458-1464	Bernard II (son)
1464-1471	Otto II (brother)
1471-1522	Henry II, the Middle (son; abdicated, died 1532)
1522-1527	Otto III (son; Harburg 1527-49)
1522-1546	Ernest I, the Confessor (brother)
1536-1539	Francis (brother; Gifhorn 1539-49)
1546-1559	Francis Otto (son of Ernest I)

Middle Line of Brunswick

1388-1428	Bernard I (son of Magnus II; shared Luneburg 1388; shared Brunswick 1400; Brunswick 1409; Luneburg 1428)
1428-1482	William I, the Victorious (nephew; Luneberg 1416-28; Calenberg 1432)
1432-1473	Henry the Pacific (brother; Wolfenbuttel)
1482-1484	Frederick (son of William I; Calenberg 1483; deposed, died 1495)
1482-1495	William II, the Younger (brother; Guttingen 1483; abdicated, died 1503)

Line of Calenberg

1495-1540	Erik I, the Elder (son; received Calenberg-Gottingen by partition 1495)
1540-1584	Erik II, the Younger (son; union w/ Wolfenbuttel 1585)

Line of Wolfenbuttel

1495-1514	Henry I, the Elder (son of William II; Wolfenbuttel 1495)
1514-1568	Henry II, the Younger (son)
1568-1589	Julius (son; Calenberg 1585)
1589-1613	Henry Julius (son)
1613-1634	Frederick Ulrich (son; Calenberg to Luneburg and Wolfenbuttel to Dannenburg 1635)

New Line of Luneburg

1559-1592	William the Younger (son of Ernest I; received Luneburg (Celle) by partition 1569)
1592-1611	Ernest II (son)
1611-1633	Christian (brother)
1633-1636	Augustus the Elder (brother; Calenberg (Hanover) 1635)
1636-1641	George (brother; Hanover)
1636-1648	Frederick(brother; Celle)
1641-1665	Christian Louis (son of George; Hanover 1641-8; Celle 1648)
1648-1705	George William (brother; Hanover 1648-65; Celle 1665)
1665-1679	John Frederick (brother; Hanover)

Electors of Hanover

1679-1698	Ernest Augustus (brother; Hanover; Elector 1692)
1698-1727	George Louis (son; Celle 1705; King of England as George I 1714; union w/ England til 1837)

Kings of Hanover

1837-1851	Ernest Augustus (son of George III, King of England)
1851-1866	George V (son; deposed, died 1878; union w/ Prussia)

New Line of Brunswick - Dukes of Brunswick

1559-1598	Henry (son of Ernest I; Dannenberg 1569)
1598-1636	Julius Ernest (son)
1636-1666	Augustus the Younger (brother; Wolfenbuttel (Brunswick) 1635)
1666-1704	Rudolf Augustus (son)
1704-1714	Anthony Ulrich (brother; co-regent 1685)
1714-1731	Augustus William (son)
1731-1735	Louis Rudolf (brother)

Line of Breven

1735	Ferdinand Albert (gson of Augustus the Younger)
1735-1780	Charles I (son)
1780-1806	Charles William Ferdinand (son)
1806-1815	Frederick William (son; union with the Kingdom of Westphalia 1807-13)
1815-1830	Charles II (son; deposed, died 1873)
1830-1884	William (brother)
1885-1906	Albert of Prussia (regent)
1907-1913	John Albert of Mecklenburg-Schwerin (regent; resigned, died 1920)

Line of Hanover

1913-1918

Ernest Augustus (gson of George V, King of Hanover; deposed, died 1953; proclamation of the republic)