|Book(s)|| A Clash of Kings (appendix)|
A Storm of Swords (mentioned)
A Feast for Crows (appendix)
|Personal Arms|| Quarterly: a silver-grey castle on blue beneath a red bend sinister, three green mistletoes on gold bordered in green|
(Quarterly, first and fourth azure, a bridge cendrée, at either end a tower of the same, all debruised by a bend sinister gules (for Walder Rivers), second and third or, three mistletoes within a bordure vert (for Charlton))
Ser Aemon Rivers is a knight and the only son of Ser Walder Rivers, the oldest of Lord Walder Frey's bastard sons. His mother is a member of House Charlton. He has a daughter named Walda.
Like his father, he also has a personal blazon.