Who said "A promise sworn is a debt unpaid."?

This quote is attributed to Catelyn Stark.

A promise sworn is a debt unpaid. - Catelyn Stark

"A promise sworn is a debt unpaid."

Catelyn Stark

Character in A Clash of Kings

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"The things we love destroy us every time."

"The living should grieve the living, and let the dead tend the dead."

"My son was not a craven."

"The gods are not done with us yet"