Alexander married Dorothea of Schwarzburg-Sondershausen, daughter of
John Günther I, Count of Schwarzburg-Sondershausen, on 26 November 1604 in
Oldenburg. They had eleven children: •
John Christian (26 April 1607 – 28 June 1653) •
Alexander Henry (12 September 1608 – 5 September 1657) •
Ernest Günther (14 October 1609 – 18 January 1689) •
George Frederick (18 December 1611 – 23 August 1676) •
August Philipp (11 November 1612 – 6 May 1675) • Adolph (2 November 1613 – 1 February 1616), died young • Anna Elisabeth (5 February 1615 – 19 February 1616), died young • William Anton (2 April 1616 – 2 April 1616), died soon after birth • Sophie Katharina (28 June 1617 – 22 November 1696), wife of
Anthony Günther, Count of Oldenburg • Eleonore Sabine (27 February 1619 – 27 February 1619), died soon after birth •
Philip Louis (27 October 1620 – 10 March 1689) == Ancestors ==