Sir Edward Newenham, b. 14 May 1732 was a younger son of William Newenham of Coolmore, co. Cork, and Dorothea Worth, daughter and heiress of Edward Worth baron of the Exchequer in Ireland. He represented the county of Dublin from 1776 to 1797 and was a Lord Mayor of Dublin.
About 1780 he went to reside in a house on the site of Drumcondra Castle, Parish Clonturk, county Dublin, anddied 2 Oct 1814 at Retiero, near Blackrock, Dublin.
He married in Feb 1754 to Grace Anna Burton, dau of Sir Charles Burton, and they had eighteen children.
Sir Edward Newenham was an intimate friend of Benjamin Franklin (America ref: Papers of Benjamin Franklin).
A duel was reported in The Hibernian Magazine - Feb 1774. Dublin 15th. A Duel was fought near Baldoyle between Sir Edward Newenham and Mr. Sheriff Tucker; each Gentleman fired a case of pistols, one ball touched the Lock of the Sheriff's hair, and went through his hat; as soon as the pistols were discharged, Sir Edward drew his sword, and as Mr. Tucker was drawing his, the Seconds interferred, and the Parties shook hands.