Analysis of information sources in references of the Wikipedia article "John Langdon (politician)" in English language version.
Judge Woodbury Langdon, of Portsmouth, N. H.; Delegate to the Continental Congress, 1779; President of N. H. Senate, 1784; Judge of the Superior Court of N. H., 1782–91....(a) Catherine Whipple Langdon: m. 1808, Edmund Roberts, of Portsmouth, N. H.
Judge Woodbury Langdon, of Portsmouth, N. H.; Delegate to the Continental Congress, 1779; President of N. H. Senate, 1784; Judge of the Superior Court of N. H., 1782–91....(a) Catherine Whipple Langdon: m. 1808, Edmund Roberts, of Portsmouth, N. H.