Europe

German husband of Danish queen's younger sister dies at 82.

  • FILE - In this April. 14, 2011 file photo, Princess Benedikte, right, and Queen Anne-Marie together with Prince Richard of Sayn-Wittgenstein-Berleburg. Denmark's royal household says the German husband of Queen Margrethe's younger sister, Prince Richard of Sayn-Wittgenstein-Berleburg, has died suddenly. He was 82. (Jens Dresling/ Polfoto via AP, File)

    FILE - In this April. 14, 2011 file photo, Princess Benedikte, right, and Queen Anne-Marie together with Prince Richard of Sayn-Wittgenstein-Berleburg. Denmark's royal household says the German husband of Queen Margrethe's younger sister, Prince Richard of Sayn-Wittgenstein-Berleburg, has died suddenly. He was 82. (Jens Dresling/ Polfoto via AP, File)  (The Associated Press)

  • FILE - In this March. 17, 2015 file photo, Princess Benedikte and Prince Richard of Sayn-Wittgenstein-Berleburg. Denmark's royal household says the German husband of Queen Margrethe's younger sister, Prince Richard of Sayn-Wittgenstein-Berleburg, has died suddenly. He was 82. (Jens Dresling/ Polfoto via AP)

    FILE - In this March. 17, 2015 file photo, Princess Benedikte and Prince Richard of Sayn-Wittgenstein-Berleburg. Denmark's royal household says the German husband of Queen Margrethe's younger sister, Prince Richard of Sayn-Wittgenstein-Berleburg, has died suddenly. He was 82. (Jens Dresling/ Polfoto via AP)  (The Associated Press)

  • File - In this April 11, 2013 file photo Prince Richard of Sayn-Wittgenstein-Berleburg attends a news conference in Bad Berleburg, Germany. Denmark's royal household says the German husband of Queen Margrethe's younger sister, Prince Richard of Sayn-Wittgenstein-Berleburg, has died suddenly. He was 82.  The royal palace said Tuesday March 14, 2017  that he passed away on Monday at the Berleburg Castle in central Germany where he and his wife, Princess Benedikte, lived. (Marius Becker/dpa via AP,file)

    File - In this April 11, 2013 file photo Prince Richard of Sayn-Wittgenstein-Berleburg attends a news conference in Bad Berleburg, Germany. Denmark's royal household says the German husband of Queen Margrethe's younger sister, Prince Richard of Sayn-Wittgenstein-Berleburg, has died suddenly. He was 82. The royal palace said Tuesday March 14, 2017 that he passed away on Monday at the Berleburg Castle in central Germany where he and his wife, Princess Benedikte, lived. (Marius Becker/dpa via AP,file)  (The Associated Press)

Denmark's royal household says the German husband of Queen Margrethe's younger sister, Prince Richard of Sayn-Wittgenstein-Berleburg, has died suddenly. He was 82.

The royal palace said Tuesday that he passed away on Monday at the Berleburg Castle in central Germany where he and his wife, Princess Benedikte, lived.

The cause of death was not given.

Benedikte is the second daughter of late King Frederik and Queen Ingrid, and often represents Margrethe at official events. Benedikte, 72, is eleventh in the line of succession to the Danish throne — one of the world's oldest monarchies.

The couple wed in 1968 in Denmark, and had three children — Prince Gustav, Princess Alexandra, and Princess Nathalie.

No funeral plans were announced.