Complex sentence: Albert Gregory Meyer (March 9,1903--April 9,1965) was an American prelate of the Roman Catholic Church who served as the Archbishop of Chicago from 1958 until his death in 1965, and was appointed a cardinal in 1959.
Split into simpler sentences: Albert Gregory Meyer (March 9,1903--April 9,1965) was an American clergyman of the Roman Catholic Church. He served as Archbishop of Chicago from 1958 until his death in 1965, and was created a cardinal in 1959.