Chesney, Francis Rawdon, explorer, born in co. Down, Ireland; explored with much labour the route to India by way of the Euphrates, though his labours were rendered futile by the opposition of Russia; proved, by survey of the isthmus, the practicability of the Suez Canal (1798-1872).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Chesney, C. Cornwallis * Chester