Brief background (given to us from the show):
This is a position that owes strict allegiance to the King
and Queen of King's Landing in the Crownlands of Westeros.
They guard the King and anyone the King commands
them to guard. It is made up of the best swords men
in Westeros. They wear golden armor with the King's
Crown embedded on the front breast plate.
Here's a picture: http://farm6.staticflickr.com/5303/5561399770_92422beecf.jpg
Note the white cloak. (Not to be confused with the
Gold Cloak knights which are from the City Watch that
look like this:
BTW: There are loads of those.)
It's a position held until death and the Knight cannot
bear children or be married. I also believe they cannot
hold lands. In S3E1, Tyrion tried to be Lord of Casterly
Rock and brought up how legitimately he was heir
(since Tywin was now Hand of the King and Jaime was
Lord Commander of the Kings Guard.)
Usually it's made up of 7 knights representing the 7
realms of the Kingdom, however it appears there
doesn't have to be a knight from each part of the realm
represented in the Guard. Can anyone verify if that is
the case? The lead knight of the 7 is called the Lord
Commander. The Lord Commander stands vigil for a
dead knight. (Barristan watched over Ser Hugh of the
Vale. S1E4) Jaime indicated that the Lord Commander
also is responsible for documenting the feats of all the
Knights Guard. S4E4. (I suppose in a way that person
has the ability to document and create history for eyes
of new generations.)
I think it's important to note which House these
Knights come from in the realms of the kingdom:
Ser Jaime Lannister: Lord Commander of the Kingsguard (House Lannister, The Westerlands)
Ser Boros Blount: (House Blount, The Crownlands)
Ser Preston Greenfield: (House Greenfield, The Westerlands)
Ser Arys Oakheart: (Currently in Dorne as the sworn shield of Myrcella Baratheon.)(House Oakheart, The Reach)
Ser Meryn Trant: (House Trant, The Stormlands)
Ser Balon Swann: (House Swann, The Stormlands)
Sandor Cleghane: (The Hound, deserted his position during the Battle of the Blackwater.)(Hose Cleghane, The Westerlands)
The wild card I think here is Jaime Lannister. Jaime
may do what he wants to do rather than what honor
requires. What do you think?
Technically there is one slot open (The Hound's).
Is that the case or is the Hound still a member of the King's Guard?
Tywin already threatened to Olenna Tyrell he would
appoint Ser Loras of House Tyrell that position if both
marriages (Loras to Cersei and Margaery to Joffrey) didn't occur.
I suppose that's out the Window unless Tywin tells
Olenna that Margaery can marry Tommen if Cersei
marries Ser Loras or else the same thing will happen.
Game of Thrones: Threads at the TV Critic