Who said "I am the blood of Old Valyria"?

This quote is attributed to Daenerys Targaryen.

I am the blood of Old Valyria - Daenerys Targaryen

"I am the blood of Old Valyria"

Daenerys Targaryen

Character in A Game of Thrones

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"The dragon has three heads."

"The dragon cannot be caged."

"I am the dragon."

"Blood of my blood."