Who said "I demand a trial by combat."?

This quote is attributed to Tyrion Lannister.

I demand a trial by combat. - Tyrion Lannister

"I demand a trial by combat."

Tyrion Lannister Justice

Character in A Storm of Swords

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"I drink and I know things"

"Some old wounds never truly heal."

"Justice is a word."

"Gold buys allegiances."

"Justice must always prevail."

"You think I'm just some animal?"

"Fighting for what's right never gets easier."

"Justice is worth fighting for."