Complex sentence: The Church of the Holy Cross (1803-ca.1862) (from 1808 the Cathedral of the Holy Cross), located on Franklin Street in Boston, Massachusetts and designed by Charles Bulfinch, was the first church built for the city's Roman Catholics.
Split into simpler sentences: The Church of the Holy Cross (1803-ca.1862) was located on Franklin Street in Boston, Massachusetts. It was designed by Charles Bulfinch and was the first church built for the city's Roman Catholics.