Susan and James were the parents of Paul Fenimore Cooper (1899–1970), an author and Henry's nephew.

After graduation from Yale, he began working in the lumber business, like his father and grandfather, eventually becoming president of Sage Land and Development Company, as well as a director of several banks and insurance companies in Albany.

[3] The family later donated the funds to build Sage Hall at Yale, at the time, the largest forestry school on the continent.

Anna was the daughter of Dr. Samuel Baldwin Ward, an Albany surgeon.

Together, they were the parents of two more children:[3] He died on September 25, 1933, at his home "Fernbrook" in Menands, New York, of a heart attack after having been ill for several years.