|Title||Lord of Pinkmaiden|
|Book(s)|| A Game of Thrones (mentioned)|
A Storm of Swords (mentioned)
A Feast for Crows (appears)
A Dance with Dragons (mentioned)
A Game of Thrones
Ser Edmure Tully commands Lord Vance and Lord Clement Piper to guard the pass below the Golden Tooth when the Lannisters start to mass troops there. Ser Jaime Lannister smashes their force, with Lord Vance killed and Lord Clement put to flight.
A Feast for Crows
Lord Clement is among the reluctant river lords who take part in the Siege of Riverrun. He is named as a representative to the war council for those river lords who only joined with House Lannister after the Red Wedding. During the council, Lord Clement dismisses Lord Norbert Vance's idea of peaceful resolution and threatens Edwyn Frey before Walder Rivers steps in.