Thank you for offering me company, Bullfrog! It is nort the easiest puzzle to explain, because the theme is 'misprints' so the answers do not conform to usual rules. However, I came back to the site to say that I had made sense of 11a, finally, and my assumptions of something along the lines of 'Parisian', 'Parischen', etc, waere completely wrong - it is a word that I had never heard of!