Tommaso Martinelli was born in the parish of Sant'Anna, Lucca as the son of Cosma Martinelli and Maddalena Pardini. He was the brother of Cardinal Sebastiano Martinelli.
Education
He entered the Order of Hermits of Saint Augustine (Augustinians)[2] in Lucca in 1842 and was professed on 19 April 1844.
Priesthood
He was ordained on 22 December 1849 in Rome. He was lecturer in the monastery and college of St Augustine, Rome and served as regent of studies of the school in September 1855. He became assistant professor of Scripture at La Sapienza University in Rome in 1856. He was full professor from 1862 to 1870. He visited Belgium, the Netherlands, Ireland, Bavaria and Bohemia with the superior general of the order in 1862. He was consultor of the Congregation of the Index in 1864. He was a theologian at the First Vatican Council from 1869 to 1870.
He opted for the order of cardinal bishops, taking the suburbicarian see of Sabina on 24 March 1884.
Death
He died in 1888, at 6:45 a.m. in Rome, after a brief illness;[4] his body was exposed in the church of S. Agostino, Rome, where the funeral took place on 4 April at 10 a.m. The final absolution was imparted by Cardinal Carlo Sacconi, Dean of the Sacred College of Cardinals; eighteen cardinals were also in attendance; the remains were buried in the chapel of his order in the Campo Verano cemetery.