William (4 July 1535 – 20 August 1592), called William the Younger (''german: Wilhelm der Jüngere''), was Duke of Brunswick-Lüneburg and Prince of Lüneburg from 1559 until his death. Until 1569 he ruled together with his brother, Henry of Dannenberg. William was the son of Ernest I, Duke of Brunswick-Lüneburg. On 12 October 1561 he married Dorothea of Denmark (29 June 1546

Kolding Kolding () is a Danish seaport located at the head of Kolding Fjord in the Region of Southern Denmark. It is the seat of Kolding Municipality. It is a transportation, commercial, and manufacturing centre, and has numerous industrial companie ...

–6 January 1617 Winsen), daughter of

Christian III of Denmark Christian III (12 August 1503 – 1 January 1559) reigned as King of Denmark from 1534 and King of Norway from 1537 until his death in 1559. During his reign, Christian formed close ties between the church and the crown. He established ...

and Dorothea of Saxe-Lauenburg. In 1582, William began suffering from fits of insanity. These fits caused his wife to flee him in 1584 for her own safety. After William's death, his wife became regent for their son George.

Children that reached adulthood

* Sophie of Brunswick-Lüneburg (30 October 1563 – 1639); married George Frederick, Margrave of Brandenburg-Ansbach. * Ernest II, Duke of Brunswick-Lüneburg (31 December 1564 – 2 March 1611); Prince of Lüneburg from 1592–1611. * Elisabeth of Brunswick-Lüneburg (19 October 1565 – 17 July 1621); married Frederick, Count of Hohenlohe-Langenburg. * Christian, Duke of Brunswick-Lüneburg (19 November 1566 – 8 November 1633); Prince of Lüneburg from 1611–1633. *

Augustus the Elder, Duke of Brunswick-Lüneburg Augustus the Elder, Duke of Brunswick-Lüneburg (18 November 1568 – 1 October 1636) was the Lutheran Bishop of Ratzeburg from 1610 to 1636 and the Prince of Lüneburg from 1633 to 1636. Life Augustus was born in 1564 as the fifth of fiftee ...

(18 November 1568 – 1 October 1636); Prince of Lüneburg from 1633–1636. *

Dorothea of Brunswick-Lüneburg Dorothea of Brunswick-Lüneburg (1 January 1570 – 15 August 1649) was a daughter of Duke William "the younger" of Brunswick-Lüneburg and his wife, Dorothea of Denmark, Duchess of Brunswick-Lüneburg. She married Count Palatine Charles I ...

(1 January 1570 – 15 August 1649); married

Charles I, Count Palatine of Zweibrücken-Birkenfeld Charles I of Zweibrücken-Birkenfeld (4 September 1560 – 16 December 1600), Count Palatine of the Rhine, Duke in Bavaria, Count to Veldenz and Sponheim was the Duke of Zweibrücken-Birkenfeld from 1569 until 1600. Life Charles was born in Neu ...

. * Clara of Brunswick-Lüneburg (16 January 1571 – 18 July 1658); married William, Count of Schwarzburg-Blankenburg. * Anne Ursula of Brunswick-Lüneburg (22 March 1572 – 5 February 1601) *

Margaret of Brunswick-Lüneburg Margaret of Brunswick-Lüneburg (6 April 1573 7 August 1643), was a German noblewoman member of the House of Welf and by marriage Duchess of Saxe-Coburg. Born in Celle, she was the ninth of fifteen children born from the marriage of William the ...

(6 April 1573 – 7 August 1643); married

John Casimir, Duke of Saxe-Coburg John Casimir of Saxe-Coburg (Gotha, 12 June 1564 – Coburg, 16 July 1633) was the Duke of Saxe-Coburg. He was the descendant of the Ernestine branch of the House of Wettin. Under his rule, the residence town of Coburg prospered with many ...

. * Frederick IV, Duke of Brunswick-Lüneburg (28 August 1574 – 10 December 1648); Prince of Lüneburg from 1636–1648. * Marie of Brunswick-Lüneburg (21 October 1575 – 8 August 1610) * Magnus of Brunswick-Lüneburg (30 August 1577 – 10 February 1632) *

George, Duke of Brunswick-Lüneburg George, Duke of Brunswick-Lüneburg (17 February 1582, in Celle – 12 April 1641, in Hildesheim), ruled as Prince of Calenberg from 1635. George was the sixth son of William, Duke of Brunswick-Lüneburg (1535–1592) and Dorothea of Denmark ( ...

(17 February 1582 – 12 April 1641); Prince of Calenberg 1635–1641 * John of Brunswick-Lüneburg (23 June 1583 – 27 November 1628) * Sybille of Brunswick-Lüneburg (3 June 1584 – 5 August 1652); married Julius Ernest, Duke of Brunswick-Lüneburg.

Ancestors

Dukes of Brunswick-Lüneburg 1535 births 1592 deaths Middle House of Lüneburg New House of Lüneburg {{Germany-noble-stub