Complex sentence: In 1865, she married Richard S. Spofford, a Boston lawyer, and they resided on Deer Island overlooking the Merrimack River at Amesbury, a suburb of Newburyport, where she died.
Split into simpler sentences: In 1865, she married Richard S. Spofford, a Boston lawyer. They lived on Deer Island overlooking the Merrimack River at Amesbury, a suburb of Newburyport, where she died.