José Sebastião de Almeida Neto was born in Lagos, Portugal, the son of Raimundo José Neto, a veteran of the Peninsular War, and his wife Lucy Catherine de Almeida. He was educated at the Seminary of Faro and received the sub-diaconate on 20 September 1862 and the diaconate on 21 May 1864.
Priesthood
He was ordained on 1 April 1865. Neto entered the Order of Friars Minor Discalced on 15 August 1875, adopting the name of Joseph of the Sacred Heart, but continued to work in the parish church of St. Sebastian until 1879, upon his bishopric appointment.
In accordance with tradition holding that the Patriarch of Lisbon be made a cardinal, Pope Leo XIII raised him to that dignity in the consistory of March 24 of 1884. As the Patriarch of Lisbon he presided over the wedding of Prince Don Carlos with Amélie of Orléans, in the Church of St. Dominic in Lisbon on 22 May 1886. He participated in the conclave of 1903 that elected Pope Pius X. In November 1907 Neto resigned and retired to a convent of his order. Due to religious persecution with the deployment of the first Republic he fled to Spain and as of 30 May 1913, was residing in the convent of Villarino of Ramallosa. On 4 September 1913, at Sigmaringen Castle, he conducted the marriage of the exiled King Manuel II of Portugal and Manuel's second cousin, Augusta Victoria of Hohenzollern.
Death and funeral
He died at 1:30 AM on 7 December 1920 in Villarino, near Seville, Spain. On 9 December, his body was transferred to Tui, Galicia, where it arrived at 05:00. The body was received by Bishop Manuel Lago de Tuy, several canons of the cathedral chapter and the Franciscan community of the Colegio de San Antonio. The coffin was placed on a catafalque in the middle of the cathedral. On December 10, at 11 am, Mass of requiem was solemn sung by Don Manuel Vieira de Matos, Archbishop of Braga. King Alfonso XIII of Spain ordered military honors for the Cardinal. After the Mass, the bishop of Tui delivered the funeral oration. The remains were buried in the crypt of the chapel of San Telmo, the tomb of the bishops of Tui. On 28 April 1928, the body was exhumed and solemnly translated to Lisbon, where he was buried on 30 April at the tomb of the patriarchs of the Monastery of São Vicente de Fora.