Princess Dolores of Bourbon-Two Sicilies was a daughter of Prince Carlos of Bourbon-Two Sicilies and his wife Princess Louise of Orléans. Princess Dolores was born into the House of Bourbon-Two Sicilies and was a member of the Polish noble Czartoryski family through her marriage to Prince Augustyn Józef Czartoryski. 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 House of Czartoryski is a Polish princely family of Lithuanian-Ruthenian origin, also known as the Familia. The family, which derived their kin from the Gediminids dynasty, by the mid-17th century had split into two branches, based in the Klevan Castle and the Korets Castle, respectively. They used the Czartoryski coat of arms and were a noble family of the Polish–Lithuanian Commonwealth in the 18th century.