There are 7 unique codex entries in the Persons of Note section on Republic Balmorra. They are all class specific.
Akaavi Spar (Smuggler) is obtained from speaking with Akaavi Spar during "A Farewell to Arms" mission.
Codex type: Persons of Note | Faction: Republic | Class: Smuggler
Associated Achievement: None
Brel Orus (Trooper) is obtained from speaking with Brel Orus during "Den of Thieves" mission.
Codex type: Persons of Note | Faction: Republic | Class: Trooper
Associated Achievement: None
Darth Lachris (Consular) is obtained from speaking with Darth Lachris during "Passing the Torch" mission.
Codex type: Persons of Note | Faction: Republic | Class: Jedi Consular
Associated Achievement: None
Doc (Knight) is obtained from speaking with Madel during "Tactical Advantage" mission.
Codex type: Persons of Note | Faction: Republic | Class: Jedi Knight
Associated Achievement: None
Numen Brock (Smuggler) is obtained from speaking with Sixer during "Behind Enemy Lines" mission.
Codex type: Persons of Note | Faction: Republic | Class: Smuggler
Associated Achievement: None
Tanno Vik (Trooper) is obtained from speaking with Tanno Vik during "Den of Thieves" mission.
Codex type: Persons of Note | Faction: Republic | Class: Trooper
Associated Achievement: None
Zenith (Consular) is obtained from interacting with the Beacon during "Passing the Torch" mission.
Codex type: Persons of Note | Faction: Republic | Class: Jedi Consular
Associated Achievement: None