Conversation so far:
What actions did Wallis Simpson take in the second world war?
As the German troops advanced, the Duke and Duchess Wallis Simpson fled south from their Paris home, first to Biarritz then to Spain in June.
Did Wallis Simpson stay in Spain?
The Duke and Duchess Wallis Simpson moved to Portugal in July and stayed at the home of Ricardo do Espírito Santo e Silva.

Question: How long were they there?
Self-contained rewrite: How long were Wallis Simpson and Edward VIII in Portugal?