What is "cardinal-infante"

The title Cardinal-Infante may refer to any one of the following, each of them both an infante (prince) and a cardinal:

• Infante Jaime of Coimbra (1433–1459)
• Cardinal-Infante Afonso of Portugal (1509–1540)
• Henry of Portugal (1512–1580), Cardinal-Infante (1545–1578), Cardinal-King of Portugal (1578–1580)
• Cardinal-Infante Ferdinand of Austria (1609–1641), Spanish-born political and military figure
• Luis de Borbón y Farnesio, 13th Count of Chinchón (1727–1785)