Grocott & Ward, comps. Grocott’s Familiar Quotations, 6th ed. 189-?.

Unknown

Not to know me argues yourself unknown,
The lowest of your throng.
Milton.—Paradise Lost, Book IV. Line 830.

Far above all reward, yet to which all is due;
And this, ye great unknown! is only known to you.
Swift.—Ode to the Athenian Soc., Verse 7.

The Unknown has kept his faith.
Scott.—Peveril of the Peak, Chapter XXXVI.