[1] Langdon attended the Latin grammar school at Portsmouth, then went into the counting house of Henry Sherburne, a prominent local merchant.

He was described as a large, handsome man—indeed, a contemporary recalled that the three handsomest men of that era were George Washington, Lord Whitworth and Woodbury Langdon.

The New Hampshire House of Representatives voted 35-29 to impeach him for neglecting his duties, finding that he had failed to attend sessions of the court in outlying counties in order to pursue his commercial interests in Portsmouth.

It also resented his charge that the legislature failed to provide honorable salaries for judges and interfered in court decisions, calling his conduct " ... impertinent and unbecoming to his office."

A final campaign for this seat came in a November 1799 special election after Sprague declined to serve, but Langdon lost in a landslide to James Sheafe.

Their children included: Governor and historian William Plumer reflected: He was a man of great independence and decision - bold, keen and sarcastic, and spoke his mind of men and measures with great freedom ... .He was naturally inclined to be arbitrary and haughty, but his sense of what was right, and his pride prevented him from doing intentional evil.Langdon's neoclassical mansion was purchased in 1830 by a company which converted it into an inn called The Rockingham House.