Sir George Buck might have used a letter to talk about the alleged relationship between Elizabeth of York and her uncle .
There is no conclusive evidence of any relationship between Elizabeth and her uncle , but Sir George Buck ( 1560-1622 ) later claimed to have uncovered a letter from Elizabeth indicating that she was involved and willing , although he never produced the supposed letter , meaning that such a letter probably never exsisted and was just used to perpetuate the rumour .