Complex sentence: Following Jean's death in 1994, he married Ann Bonar, widow of sociologist Hubert M. ("Tad") Blalock, and moved to her home in Seattle, Washington where all of her children and grandchildren lived.
Split into simpler sentences: Following Jean's death in 1994,he married Ann Bonar Blalock, widow of Sociologist Hubert M. ("Tad") Blalock. Following the marriage, he moved to Seattle, Washington where all of her children and grandchildren lived.