In return for being allowed to withdraw his troops unmolested, Henry agreed to a treaty to deliver Ceuta back to the Marinids.

At the Cortes of Leiria assembled by King Edward early in 1438, he rallied the nobles and took to the floor, urging them to refuse the surrender of Ceuta back to the Marinids.

[1] By royal decree dated from 25 May 1455, King Afonso V of Portugal granted Fernando I the new title of 1st Marquis of Vila Viçosa.

In 1460, as his older brother, Afonso, Marquis of Valença, died without legitimate issue, Fernando I became the 5th Count of Ourém and the House of Braganza's heir.

In 1471, when King Afonso V took to North Africa to conquer the city of Arzila, Fernando I remained in mainland Portugal as regent of the kingdom.