Brigadier General Sir James Jeffreys (c. 1650 – 1722), also spelt Jeffereyes, was an Anglo-Irish soldier and politician, who served in the armies of both Charles XI of Sweden and William III of England.
In January 1690, Jeffreys applied through the English envoy in Sweden to leave Swedish service and join the army of William III.
His application was accompanied by a letter of commendation from Charles XI which praised Jeffreys' bravery.
In the autumn of 1697, the Parliament of Ireland heard a series of complaints about Jeffreys's actions in Duncannon and in 1698 he was removed to become Governor of Cork, exchanging commands with Toby Purcell.
[1] He successfully petitioned Queen Anne and George I to maintain his position in Cork, which was accompanied by a generous pension.