Kevan Lannister

From A Wiki of Ice and Fire

Kevan Lannister was Tywin Lannister's younger brother. He served for years as Tywin's most trusted captain. He is known for his reliability and loyalty. Kevan recognized the superiority of his brother at an early age and was comfortable doing his duty to realize his brother's wishes, though this meant perpetually living in his shadow. It is said that Kevan never had a thought that Tywin hadn't had first. He is married to Dorna of House Swyft, with whom he has three sons, Lancel, Willem and Martyn, and a daughter, Janei.

After Tywin's death, Cersei Lannister offered him the position of Hand of the King, but he refused because Cersei would not agree to return to Casterly Rock. He quickly became alienated to his immediate family. He believed Tyrion to be a murderer and came to believe the rumors of incest about Cersei and Jaime. His eldest son, Lancel, became a religious fanatic and abandoned the estate Kevan had won for him. Kevan was also angered that Daven received the title of Warden of the West over him, and refused to add his forces to his cousin's at Riverrun, and returned to the west to see his younger son Martyn. After Cersei's imprisonment, the small council named him Regent of the King. It is unknown as of yet whether he will accept the position.