Conversation so far:
Was Prince Bernhard of Lippe-Biesterfeld married?
they were married at The Hague on 7 January 1937.
Who was he married to?
Princess Juliana.
Did they have any children?
Prince Bernhard was father of six children.

Question: Did either him or Juliana have children outside of the marriage?
Self-contained rewrite: Did either Prince Bernhard of Lippe-Biesterfeld or Juliana have children outside of the marriage?