Name
- Bucarely y Ursua, Antonio Maria, Viceroy of Mexico1
- Buoncompagno, Filippo, Cardinal, Secretary of Gregory XIII1
- Bustillo, Nicolao1
- Buys, Willem, Dutch Plenipotentiary at the Treaty of Utrecht1
- Buzardo, Georgio, Papal nuncio1
- Caballero y Gongora, Antonio, Archbishop of Santa Fé, Viceroy of Granada, 1723-17961
- Cabrera y Bobadilla, Geronimo Fernandez, Conde de Chinchon, Viceroy of Peru, 1589-16471
- Caceres, Francisco, conquistador, 1539-15891
- Cadaval1
- Caettano, Francesco, Secretary of the Portuguese Legation in London1
- Cala, Carlos, Duque de Diano1
- Calepino, Jorge, Chronicler Royal of Portugal1
- Camara, Counts of Calheta1
- Campbell, John, 2nd Duke of Argyll and 1st Duke of Greenwich1
- Canpo, Juan, Abbat of S Pedro de Cardeña1
- Cantalicio, Felix1
- Carafa, Pier Luigi, Bishop of Tricarico, Cardinal 16451
- Carbone, Ludovico, humanist scholar, 1430-14851
- Cardenas, Alonso, Spanish Ambassador in England1
- Cardoso de Sequeira, Martin1