Princess Pilar of Bavaria (Maria del Pilar Eulalia Antonia Isabella Ludovika Franziska Josepha Rita Euphrasia von Wittelsbach, princess of Bavaria) (13 March 1891 â 29 January 1987) was a German Royal, the only daughter of Prince Ludwig Ferdinand of Bavaria and Infanta Maria de la Paz of Spain.
Princess Pilar was the co-author of a 1932 biography, Every Inch a King, about her cousin King Alfonso XIII of Spain. Princess Pilar was also an artist and headed the Bavarian branch of the German Red Cross for 40 years.
She never married and died without issue.