She was also an aunt of Juan Carlos I of Spain, son of her sister Princess María de las Mercedes of Bourbon-Two Sicilies.

The Princess and her sisters continued their studies as boarders at the school of Irish nuns in Castilleja de la Cueva in Seville.

In September 1939 with the Invasion of Poland bombs fell on Kraków, Prince Augustyn and Princess Dolores, who was pregnant, decided to leave the country and move to Spain.

They settled in Seville where Princess Dolores gave birth to a son: Prince Adam Karol Czartoryski (born 2 January 1940).

In 1943 the couple bought a rural property in Dos Hermanas which they called it Garden of the Princess, the farm was self-sufficient for the subsistence of the family.

The couple had a second son also born in Seville, Prince Ludwik Piotr Czartoryski (13 March 1945 - 3 May 1946), but the child died at only fourteen months.

Prince Augustyn was in poor health, the troubles and tribulation of the war took a toll on his life and he died on 1 July 1946, aged thirty nine.

Four years into her widowhood, she fell in love with Carlos Chías Osorio (born at Barcelona 26 Feb 1925), an ex seminarist, teacher and preceptor of her son Adam.