Infanta María de la Paz of Spain
Infanta María de la Paz of Spain ("María de la Paz de Borbón y Borbón"
; Madrid, 23 June 1862 – Schloss Nymphenburg, Munich, 4 December 1946) was an infanta of Spain.
A daughter of Queen Isabella II of Spain, she married her first cousin Prince Ludwig Ferdinand of Bavaria.
She lived for the rest of her life in Germany, dedicating her time to her family, charity work and writing poetry.
She wrote a book of memoirs: "Through Four Revolutions: 1862–1933".
Prince Adalbert of Bavaria (b. 1944)
Prince Adalbert( Etzi) of Bavaria( born 27 December 1944) is a member of the Bavarian Royal House of Wittelsbach.
Taddea Visconti
Taddea Visconti, Duchess of Bavaria (1351 – 28 September 1381) was an Italian noblewoman of the Visconti family, the ruling house in Milan from 1277 to 1447.
She was the first wife of Stephen III, Duke of Bavaria, and the mother of the French queen Isabeau of Bavaria.
Prince Luitpold of Bavaria (b. 1951)
Prince Luitpold of Bavaria( born 14 April 1951) is a member( 2nd in succession line to head of house) of the House of Wittelsbach, which reigned as kings of Bavaria until 1918, and a CEO of König Ludwig Gmb H& Co. KG Schlossbrauerei Kaltenberg.
Prince Franz-Josef of Bavaria
Prince Franz- Josef of Bavaria( born 21 September 1957) is a member of the Bavarian Royal House of Wittelsbach and a member of the Roman Catholic Order of Saint Benedict.
Prince Manuel of Bavaria
Prince Manuel of Bavaria( born 27 December 1972) is a member of the deposed Bavarian Royal House of Wittelsbach, and a cardiology researcher at Columbia University.
Minamoto no Chikako
She was the mother of Prince Morinaga.
Marie of Prussia
Marie of Prussia (October 15, 1825 – May 17, 1889) was Queen of Bavaria and the mother of Kings Ludwig II and Otto of Bavaria.
Ernest of Bavaria (1500–1560)
Duke Ernest of Bavaria( born 13 June 1500 in Munich – died: 7 December 1560 in Glatz) was Administrator of the dioceses of Passau and Salzburg and pledge lord of Glatz.
Princess Pilar of Bavaria
Princess Pilar of Bavaria ("Maria del Pilar Eulalia Antonia Isabella Ludovika
Franziska Josepha Rita Euphrasia von Wittelsbach, princess of Bavaria")
(March 13, 1891 – January 29, 1987) was the only daughter of Prince Ludwig Ferdinand of Bavaria and his wife Infanta Maria de la Paz of Spain.

Question: What is the place of birth of Princess Pilar Of Bavaria's mother?
Answer: Madrid