Via John Derbyshire, the irresistable Cantos XIV-XVII of Byron's Don Juan:

The Russians now were ready to attack:
But oh, ye goddesses of war and glory!
How shall I spell the name of each Cossacque
Who were immortal, could one tell their story?
Alas! what to their memory can lack?
Achilles' self was not more grim and gory
Than thousands of this new and polish'd nation,
Whose names want nothing but — pronunciation.

Still I'll record a few, if but to increase
Our euphony: there was Strongenoff, and Strokonoff,
Meknop, Serge Lwow, Arséniew of modern Greece,
And Tschitsshakoff, and Roguenoff, and Chokenoff,
And others of twelve consonants apiece;
And more might be found out, if I could poke enough
Into gazettes; but Fame (capricious strumpet),
It seems, has got an ear as well as trumpet,

And cannot tune those discords of narration,
Which may be names at Moscow, into rhyme;
Yet there were several worth commemoration,
As e'er was virgin of a nuptial chime;
Soft words, too, fitted for the peroration
Of Londonderry drawling against time,
Ending in "ischskin," "ousckin," "iffskchy," "ouski":
Of whom we can insert but Rousamouski,

Scherematoff and Chrematoff, Koklophti,
Koclobski, Kourakin, and Mouskin Pouskin,
All proper men of weapons, as e'er scoff'd high
Against a foe, or ran a sabre through skin:
Little cared they for Mahomet or Mufti,
Unless to make their kettle-drums a new skin
Out of their hides, if parchment had grown dear,
And no more handy substitute been near.