Sancho I of Portugal
Ferdinand (24 March 1188 – 27 July 1233; Portuguese: "Fernando", French and Dutch: "Ferrand") reigned as "jure uxoris" Count of Flanders and Hainaut from his marriage to Countess Joan, celebrated in Paris in 1212, until his death. He was born in Coimbra, and he was an Infante of Portugal as the fourth son of King Sancho I of Portugal and Dulce of Aragon.