More on Knee Tribute from Infoplease:

• Knee Tribute - Knee Tribute Adoration or reverence, by prostration or bending the knee. Coming to receive from us ...
• Dictionary of Phrase and Fable: K - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "K"
• John Milton - Paradise Lost: Book V - Now Morn her rosie steps in th' Eastern Clime Advancing, sow'd the Earth with Orient Pearle, When ADAM wak't, so customd, for his sleep Was Aerie ligh