His maternal grandparents were Elizabeth Scriven (Clark) and diplomat Henry Richardson Labouisse, Jr. His maternal great-grandfather was art collector and philanthropist Stephen Carlton Clark, who was the son of Alfred Corning Clark and the grandson of inventor Edward C. Clark.
The family lineage of this individual includes his maternal grandparents, Elizabeth Scriven (Clark) and Henry Richardson Labouisse, Jr., as well as his maternal great-grandfather, Stephen Carlton Clark, a renowned art collector and philanthropist who was the son of Alfred Corning Clark and the grandson of inventor Edward C. Clark.