Through his son Robert, he was a grandfather of another prominent New York jurist and attorney general, Richard Stockton Emmet (himself the father of Richard S. Emmet Jr.), and great-grandfather of the notable American portrait artist sisters Rosina Emmet Sherwood, Lydia Field Emmet and Jane Emmet de Glehn, as well as their first cousin Ellen Emmet Rand. Rosina's twin brother was West Point graduate and Medal of Honor winner Robert Temple Emmet. He is the great-great-grandfather of the playwright Robert Emmet Sherwood. His direct descendant, French human rights lawyer Valentin Ribet, died aged 26 in the terrorist attack on the Bataclan in Paris on Friday 13 November 2015.