Complex sentence: The Yusupovs are a Russian noble family descended from the Khans of the 10th century who, in the 18th and 19th centuries, were renowned for their immense wealth, philanthropy and art collections.
Split into simpler sentences: The Yusupovs are a Russian noble family descended from the Khans of the 10th century. In the 18th and 19th centuries the were renowned for their immense wealth, philanthropy, and art collections.