Green’s Dictionary of Slang

used to intensify a n., e.g. anointed rascal, anointed scoundrel, a very definite rascal.

1690		Dryden Don Sebastian 82: An annointed halter take you all.
1769		W. Robertson Hist. of Reign of Charles V n.p.: Their anointed malefactors, as they called them, seldom suffered capitally even for the most enormous crimes [F&H].
1835		G. Kent Modern Flash Dict.
1840		Mons. Merlin 18 Jan. 3/1: When, however, we find him called an ‘anointed scoundrel’, a ‘hoary robber’, and such like [...] we cannot think there is much apology for what he s\ays.
1846		Swell’s Night Guide 110/1: Anointed, knowing, ripe for mischief.
c.1850		Duncombe New and Improved Flash Dict.
1857		Leigh Chron. 22 Aug. 1/4: The anointed scoundrel was at that very time living in a state of adultery withj a plurality of wives.
1864, 1867, 1870		Hotten Sl. Dict.
1872		London Dly News 27 Apr. 3/4: You may again trace the career of each ‘anointed scoundrel’ through the courts of law.
1881		Newcastle Courant 2 Sept. 6/5: [He] had executed such bold and skilfully arranged robberies that he was regarded [as] an ‘anointed scoundrel’ by all the ‘cross bolkes’.
1883		Ipswich Jrnl 10 Feb. 10/5: They began to throw stones [...] at him, and one of them, Moore, was an anointed rascal.
1882		A.S. Palmer Folk Etymology 9/2: anointed [...] is, without doubt, a corruption of the French anoienté (Roquefort), another form of anéanti, brought to nothing, worthless, good for nothing.
1897		Leamington Spa Courier 6 Mar. 4/5: [The] Magistrates of the Boriugh [...] ordered the anointed young rascal of eleven years — who stole 30s [...] to be birched.