Graduating from Dickinson College in Carlisle in 1813, Harmar Denny was admitted to the bar in Pennsylvania in 1816 and became a law partner with Henry Baldwin and practiced law in Pittsburgh . He married Elizabeth F. O'Hara on November 25, 1817 and they had 11 children.
Harmar Denny, who graduated from Dickinson College in Carlisle in 1813, was admitted to the Pennsylvania bar in 1816 and became a law partner with Henry Baldwin in Pittsburgh. He married Elizabeth F. O'Hara on November 25, 1817, and they had eleven children.