Complex sentence: Following his third and final trip to the shrine of Loreto in Italy, Chaumonot was cured of a terrible headache and in gratitude, the colony was placed under the patronage of Our Lady of the Annunciation, but is still commonly called Lorette.
Split into simpler sentences: Following his third and final trip to the shrine of Loreto in Italy, Chaumonot was cured of a terrible headache. In gratitude, he placed the colony under the patronage of Our Lady of the Annunciation, but it is still commonly called Lorette.