- Duke of Anjou and Cádiz. He was a claimant to the French throne.
- Grandson of Queen Victoria Eugenia and King Alfonso XIII. Great-grandson of 'Princess Henry of Battenburg'. Great-great-grandson of Queen Victoria and Prince Albert.
- Cousin of Juan Carlos de Borbón, and Pilar de Borbón.
- As his mother was not of royal descent, his father signed a renunciation to the Spanish throne prior to their marriage. Thus, Alfonso and his brother were not in the line of succession to the Spanish throne in accordance with the Pragmatic Sanction of 1776.
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