Christian III Maurice, Duke of Saxe-Merseburg
Christian III Maurice, Duke of Saxe-Merseburg (Merseburg, 7 November 1680 – Merseburg, 14 November 1694), was a duke of Saxe-Merseburg and member of the House of Wettin.
He was the eldest son of Christian II, Duke of Saxe-Merseburg, and Erdmuthe Dorothea of Saxe-Zeitz.
August, Duke of Saxe-Merseburg-Zörbig
August, Duke of Saxe-Merseburg-Zörbig (Merseburg, 15 February 1655 – Zörbig, 27 March 1715), was a German prince and member of the House of Wettin.
He was the third but second surviving son of Christian I, Duke of Saxe-Merseburg and Christiana of Schleswig-Holstein-Sonderburg-Glücksburg.
Sophie Hedwig of Saxe-Merseburg
Sophie Hedwig of Saxe-Merseburg (4 August 1660 - 2 August 1686), was a German noblewoman member of the House of Wettin and by marriage Duchess of Saxe-Saalfeld.
Born in Merseburg, she was a child of Christian I, Duke of Saxe-Merseburg and his wife Christiana of Schleswig-Holstein-Sonderburg-Glücksburg.
Christiana of Schleswig-Holstein-Sonderburg-Glücksburg
Princess Christiana of Schleswig-Holstein-Sonderburg-Glücksburg, often referred to as "Christiane" (22 September 1634 in Copenhagen – 20 May 1701 at Delitzsch Castle)
was the consort of Christian I, Duke of Saxe-Merseburg, who was the ruling Duke of Saxe-Merseburg from 1650 until his death.
Philipp, Duke of Saxe-Merseburg-Lauchstädt
Philipp, Duke of Saxe-Merseburg-Lauchstädt (26 October 1657 – 1 July 1690) was a German prince.
He was a member of the House of Wettin.
He was born in Merseburg, the fifth but third surviving son of Christian I, Duke of Saxe-Merseburg and Christiana of Schleswig-Holstein-Sonderburg-Glücksburg.
Maurice Wilhelm, Duke of Saxe-Merseburg
Maurice Wilhelm, Duke of Saxe-Merseburg (5 February 1688 – 21 April 1731) was a duke of Saxe-Merseburg and member of the House of Wettin.
He was born in Merseburg, the fifth (but second surviving) son of Christian II, Duke of Saxe-Merseburg, and Erdmuthe Dorothea of Saxe-Zeitz.
Heinrich, Duke of Saxe-Merseburg
Heinrich, Duke of Saxe-Merseburg (Merseburg, 2 September 1661 – Doberlug, 28 July 1738), was a duke of Saxe-Merseburg and member of the House of Wettin.
He was the sixth (but fourth surviving) son of Christian I, Duke of Saxe-Merseburg and Christiana of Schleswig-Holstein-Sonderburg-Glücksburg.
Eleonore Sophie of Saxe-Weimar
Eleonore Sophie of Saxe- Weimar( 22 March 1660 – 4 February 1687), was a German noblewoman member of the House of Wettin and by marriage Duchess of Saxe- Merseburg- Lauchstädt.
Born in Weimar, she was the third of five children born from the marriage of John Ernest II, Duke of Saxe- Weimar and Christine Elisabeth of Schleswig- Holstein- Sonderburg.
Christian II, Duke of Saxe-Merseburg
Christian II of Saxe- Merseburg( 19 November 1653 – 20 October 1694), was a duke of Saxe- Merseburg and member of the House of Wettin.
He was the second( but eldest surviving) son of Christian I, Duke of Saxe- Merseburg, and Christiana of Schleswig- Holstein- Sonderburg- Glücksburg.
Christiane of Saxe-Merseburg
Christiane of Saxe- Merseburg( 1 June 1659 – 13 March 1679), was a German noblewoman member of the House of Wettin and by marriage Duchess of Saxe- Gotha- Altenburg.
Born in Merseburg, she was a child of Christian I, Duke of Saxe- Merseburg and his wife Christiana of Schleswig- Holstein- Sonderburg- Glücksburg.

Question: Where was the mother of Philipp, Duke Of Saxe-Merseburg-Lauchstädt born?
Answer: Copenhagen