 On 1 August 1856, Pope Pius IX, in the bull "Ubi Primum", made Pescia a suffragan of (subordinate to) the archbishop of Pisa.The diocese of Livorno was created by Pope Pius VII in the bull "Militantis Ecclesiae" of 25 September 1806, at the urging of Queen Maria Luisa, Regent of Tuscany.The erection was opposed both by the Archdiocese of Pisa and the Canons of San Miniato, who would lose territory, power, and income from the change.