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In the fourteenth century, Edmund of Langley, founder of the House of York, chose the white rose as his emblem. The white rose represents innocence, purity, and joy, and is associated with the Virgin Mary.
The House of York was a cadet branch of the ruling House of Plantagenet, and in the Fifteenth Century warred with a rival cadet branch, the House of Lancaster. Because the House of Lancaster's symbol was a red rose, the conflict was called the War of the Roses.
The text is Sonnet No. 54 by William Shakespeare:
O, how much more doth beauty beauteous seem
By that sweet ornament which truth doth give!
The rose looks fair, but fairer we it deem
For that sweet odour which doth in it live.
The canker-blooms have full as deep a dye
As the perfumed tincture of the roses,
Hang on such thorns and play as wantonly
When summer's breath their masked buds discloses:
But, for their virtue only is their show,
They live unwoo'd and unrespected fade,
Die to themselves. Sweet roses do not so;
Of their sweet deaths are sweetest odours made:
And so of you, beauteous and lovely youth,
When that shall fade, my verse distills your truth.
