Complex sentence: He was ordained to the priesthood by an Italian cardinal on 10 June 1865 at the Archbasilica of St. John Lateran, though his appointment in Tonga, Samoa and Wallis and Futuna was met with controversy.
Split into simpler sentences: He was ordained to the priesthood by an Italian cardinal on 10 June 1865 at the Archbasilica of St. John Lateran. Despite his training in Rome, his later appointment in Tonga, Samoa and Wallis and Futuna was met with controversy.