The Small Council

Overview
The Small Council is a small group of people who advise the King of the Seven Kingdoms in matters that they have expertise in. The King is the head of the council. In the King's absence, usually the Hand of the King, or the Regent, if the King is too young head the council. The council consists of seven members. Though most councils have these members, a king is always welcome to assign more people to his council.
 * Hand of the King
 * Lord Commander of the Kingsguard
 * Master of Coin - head of the treasury and is in charge of the fiances of the realm
 * Master of Law - oversees law and justice throughout the Seven Kingdoms
 * Master of Whispers - the head of intelligence
 * Master of Ships - has control of the navy
 * Grand Maester - Head advisor when it comes to wisdom

Current Small Council
Under King Rhaegar Targaryen in the year 277 AC this is the current small council:
 * Hand of the King - Tywin Lannister
 * Lord Commander of the Kingsguard - Ser Gerold Hightower
 * Master of Coin - Lord Leyton Hightower
 * Master of Laws - Lord Roose Bolton
 * Master of Whispers - Varys
 * Master of Ships - Lucerys Velaryon
 * Grand Maester - Grand Maester Pycelle

Small Council Under King Aerys II

 * Hand of the King - Tywin Lannister
 * Lord Commander of the Kingsguard - Ser Gerold Hightower
 * Master of Coin - Qarlton Chelsted
 * Master of Laws - Symond Staunton
 * Master of Ships - Lucerys Velaryon
 * Master of Whispers - Varys
 * Grand Maester - Pycelle