In September 1312, shortly after his death, the mortal remains of Ferdinand IV were transferred to the city of Córdoba, and on 13 September they were buried in a chapel of the Mosque–Cathedral of Córdoba, although his corpse should have been buried in the Toledo Cathedral next to his father Sancho IV or in Seville Cathedral with his paternal grandfather Alfonso X and his paternal great-grandfather Ferdinand III.

However, due to the high temperatures that occurred in September 1312, Queen Constance of Portugal, widow of Ferdinand IV, and the Infante Peter of Castile, brother of the late King, decided the burial of the mortal remains Of Fernando IV in the Mosque–Cathedral of Córdoba.
Queen Constance also founded six chaplaincies and ordered that in September was celebrated the perpetual anniversary in memory of the late King.
Within a year of the monarch's death, four candles burned permanently in his grave, and daily, during that year, the bishop of the city and the cathedral chapter sang once a day prays for the soul of the King.
In 1371, the mortal remains of Ferdinand IV and those of his son Alfonso XI were deposited in the Royal Chapel of the Mosque–Cathedral of Córdoba, whose construction had ended that same year.

In 1728, Pope Benedict XIII issued a bull for which the Royal Chapel of the Mosque–Cathedral of Córdoba was attached to the Church of Saint Hippolytus of Córdoba, and that same year, after several requests on the part of the canons of Saint Hippolytus, who had requested Philip V to have the remains of Ferdinand IV and Alfonso XI transferred to his Collegiate Church, the King authorized the transfer of the remains of the two monarchs.

In 1729 works for the completion of the Church of Saint Hippolytus were begun, which were terminated in 1736, and on the night of 8 August 1736, with all honors, the mortal remains of Ferdinand IV and Alfonso XI were transferred to the Royal Collegiate Church of Saint Hippolytus, where they rest since then.
At the same time, the canons of Saint Hippolytus transferred to their Collegiate Church all the furniture of the Royal Chapel of the Mosque–Cathedral of Córdoba.

In the first section of the presbytery of the Royal Collegiate Church of Saint Hippolytus, housed in two arcosolium, are the tombs that contain the mortal remains of Ferdinand IV (located on the side of the Epistle) and the one containing the remains of his son Alfonso XI (which is on the side of the Gospel).
The remains of both monarchs are deposited inside red marble urns, built with marble from the disappeared Monastery of San Jerónimo of Córdoba, and both were made in 1846, commissioned by the Monuments Commission.

Until that moment, the remains of both monarchs were placed in two wooden coffins in the presbytery of the church, where they were shown to distinguished visitors.
On the roofs of both sepulchres are placed pillows on which are deposited a crown and a scepter, symbols of royalty.
In September 1312, shortly after his death, the mortal remains of Ferdinand IV were transferred to the city of Córdoba, and on 13 September they were buried in a chapel of the Mosque–Cathedral of Córdoba, although his corpse should have been buried in the Toledo Cathedral next to his father Sancho IV or in Seville Cathedral with his paternal grandfather Alfonso X and his paternal great-grandfather Ferdinand III.
However, due to the high temperatures that occurred in September 1312, Queen Constance of Portugal, widow of Ferdinand IV, and the Infante Peter of Castile, brother of the late King, decided the burial of the mortal remains Of Fernando IV in the Mosque–Cathedral of Córdoba. Queen Constance also founded six chaplaincies and ordered that in September was celebrated the perpetual anniversary in memory of the late King. Within a year of the monarch's death, four candles burned permanently in his grave, and daily, during that year, the bishop of the city and the cathedral chapter sang once a day prays for the soul of the King. In 1371, the mortal remains of Ferdinand IV and those of his son Alfonso XI were deposited in the Royal Chapel of the Mosque–Cathedral of Córdoba, whose construction had ended that same year.
In 1728, Pope Benedict XIII issued a bull for which the Royal Chapel of the Mosque–Cathedral of Córdoba was attached to the Church of Saint Hippolytus of Córdoba, and that same year, after several requests on the part of the canons of Saint Hippolytus, who had requested Philip V to have the remains of Ferdinand IV and Alfonso XI transferred to his Collegiate Church, the King authorized the transfer of the remains of the two monarchs.
In 1729 works for the completion of the Church of Saint Hippolytus were begun, which were terminated in 1736, and on the night of 8 August 1736, with all honors, the mortal remains of Ferdinand IV and Alfonso XI were transferred to the Royal Collegiate Church of Saint Hippolytus, where they rest since then. At the same time, the canons of Saint Hippolytus transferred to their Collegiate Church all the furniture of the Royal Chapel of the Mosque–Cathedral of Córdoba.
In the first section of the presbytery of the Royal Collegiate Church of Saint Hippolytus, housed in two arcosolium, are the tombs that contain the mortal remains of Ferdinand IV (located on the side of the Epistle) and the one containing the remains of his son Alfonso XI (which is on the side of the Gospel). The remains of both monarchs are deposited inside red marble urns, built with marble from the disappeared Monastery of San Jerónimo of Córdoba, and both were made in 1846, commissioned by the Monuments Commission.
Until that moment, the remains of both monarchs were placed in two wooden coffins in the presbytery of the church, where they were shown to distinguished visitors. On the roofs of both sepulchres are placed pillows on which are deposited a crown and a scepter, symbols of royalty.
Ferdinand IV of Castile