Portrait of a Knight of the Order of Calatrava; probably of the Sorias or Soreau Lineage (Sorel); Portrait of a knight in the order of Calatrava; presumably of the genus Sorias or Soreau (Sorel). Bust to the left; dressed in a striped jerkin; around the neck a chain with an order mark; anonymous historical person portrayed; knighthood order; Order of Calatrava; Frans Pourbus (I) (attributed to); 1555 - 1581; panel; oil paint (paint); h 45.5 cm x w 35.4 cm d 6.5 cm