King Felipe was making his first appearance since the claims began . New book alleges his father had a secret affair with a German socialite . Corinna zu Sayn - Wittgenstein - Juan - reportedly wanted to marry her . Felipe , meanwhile , was joined by wife Letizia , 42 , at home of Alcala de Henares .
King Felipe was making his first appearance since the claims emerged . New book alleges his father had a 10-year affair with a German socialite . Corinna zu Sayn-Wittgenstein claims Juan-Carlos wanted to marry her . Felipe , 47 , was joined by wife Letizia , 42 , at University of Alcala de Henares .