The time period alcázar comes from the arabic al-qaṣr, (“the fortress” or “the palace”, اَلْقَصْر), itself derived from the latin castrum (“fortress”).
. The palace was the birthplace of infanta maria antonietta of spain (1729–1785), daughter of philip v of spain and elisabeth farnese, when the king was within the metropolis to supervise the signing of the treaty of seville (1729) which ended the anglo-spanish struggle (1727).
. With the beginning of the christian period in seville, the alcazar was transformed into the residence of the christian monarchs.
Changes have been made to the buildings to suit the wants of the monarchs and the courtroom life. In the years 1364–1366, king pedro i constructed the mudéjar palace, an instance of the andalusian mudejar model.
Under the catholic rulers isabella and fernando, the upperfloor was prolonged and reworked into the principle residence of the monarchs.