Complex sentence: Shortly after on March 24th 1864, Father Damien was ordained to priesthood at the Cathedral of our Lady of Peace, originally built by his religious order, the Congregation of the Sacred Hearts of Jesus and Mary.
Split into simpler sentences: Shortly after on March 24th 1864, Father Damien was ordained to priesthood at the Cathedral of our Lady of Peace. This church was originally built by his religious order, the Congregation of the Sacred Hearts of Jesus and Mary.