XVII; Spanish: Gregorio XVII; born Clemente Domínguez y Gómez; 23 May 1946 – 21 March 2005), also known by the religious name Fernando María de la Santa Faz, was the first Pope of the Palmarian Catholic Church, who in this capacity, claimed to be the 263rd Pope of the Catholic Church from 6 August 1978 until his death on 21 March 2005.

Domínguez and several other members of the Carmelites of the Holy Face, was ordained as a priest and then consecrated as a Bishop in January 1976, by Archbishop Ngô Đình Thục, a Vietnamese cleric of the Roman Catholic Church.

He claimed that the Holy See of the Catholic Church had been moved from Rome to El Palmar de Troya, due to the supposed apostasy of the former.

He claimed that the Virgin condemned heresy and progressivism, namely the reform of the Roman Catholic Church as a result of Vatican II.

In December 1975, Clemente Domínguez founded his own religious order, The Carmelites of the Holy Face, allegedly upon instructions from the Blessed Virgin Mary in an apparition.

Domínguez was also excommunicated latae sentientiae, Thục, the Archbishop who consecrated Gómez is believed to have reconciled to Rome before his death in 1984.

He died on 21 March 2005, in El Palmar de Troya and was succeeded by Manuel Corral, who took the name Pope Peter II.

This Glorious Pope carried out his entire Pontificate deprived of bodily sight, having lost both his eyes in a car accident.

This Holy Supreme Pontiff, as Good Shepherd and Zealous Guardian of the House of the Lord, watched at the door of the sheepfold confined to him by Christ, preventing the entry of fierce wolves to disperse and devour the flock; and in turn expelled those who, camouflaged, attempted to corrupt the Church from within.

This Holy Pope and Great Caudillo of the Tajo, with supreme courage, anathematized the antipope of Rome John Paul I the freemason, and the antipope of Rome John Paul II the freemason; and with the canons of his Infallible Doctrine and inflexible Discipline, proclaimed the Great Crusade of the Apocalyptic Period by means of an edict, doctrinal and disciplinary, yet belligerent, in defence of the rights of God and Church, openly combatting all heresy and other corruption.In the 1986 Spanish comedy film Manuel y Clemente, Clemente is played by Ángel de Andrés López.