Complex sentence: Named to commemorate John Adams, the second president of the United States, John Quincy Adams, the sixth, as well as other members of this illustrious clan, Adams is often regarded as Harvard's most historic House.
Split into simpler sentences: Named to commemorate the Adams family, including John Adams, the second president of the United States, John Quincy Adams, the sixth president. Adams House is often regarded as Harvard's most historic House.