A Knight is a professional soldier with heavy armor, heavy warhorse, lance, shield, sword and squire.  Knights must be trained from a young age to learn the skills of cavalry fighting and the heavy charge, so they are full-time warriors, not farmer-militia and have a bonus +1 to morale factored into their stats.  
Each Hundred in the Kingdom of Nessex is required to provide 1 armed knight for the King's Army for 60 days service a year, but the Lords of most Hundreds typically try to arm and equip several more as their finances permit.  The Earls of the Shires and the King himself also keep bands of household knights sworn loyal to themselves.  
SQUIRE—CLASS D (1 HD Soldier)
 AC: 14 (gambeson, kite shield)  HD 1 HP 5  
 
 Resistance: 13;  vs. magic 8
 
 Mods: W-2/N+2/S+3
 
 Speed: 30'–60' when mounted on light 
warhorse 
 
 Morale: +4
 
 Stealth -2 Perception -2
 
 Attack, Melee:  +3;  Damage:  1d6 bludgeoning or piercing ( mace or dagger)
 
 Knightly Combat:  has various combat advantages on horseback
 
 S+3, D+3, C+2, I+2,W+2,Ch+2
 
KNIGHT—CLASS C (2 HD Soldier)
 AC: 17 (avg. mail, kite shield)  HD 2 HP 9
 
 Resistance: 14;  vs. magic 9
 
 Mods: W-1/N+3/S+4
 
 Speed: 25',  50' when mounted on a heavy 
warhorse 
 
 Morale: +5
 
 Stealth -1 Perception -1
 
 Attack, Melee:  +4;  Damage:  1d10 slashing (arming sword)
 
 Attack, Melee: +4; Damage 1d12 piercing(lance, double on charge)–Reach
 
 Attack: +4; Damage 1d6 bludgeoning or piercing(mace or dagger)
 
 Knightly Combat: has various combat advantages on horseback
 
 S+4, D+4, C+3, I+3,W+3,Ch+3
 
KNIGHT—CLASS B (3 HD Soldier)
 AC: 18 (kite shield, good mail)  HD 3 HP 13
 
 Resistance: 15;  vs. magic 9
 
 Mods: W-1/N+3/S+5
 
 Speed: 30' 50' when mounted on a heavy 
warhorse 
 
 Morale: +6
 
 Stealth -1 Perception -1
 
 Attack, Melee:  +5; Damage:  1d10 slashing (arming sword)
 
 Attack, Melee: +5;  Damage 1d12 piercing (lance, double on charge)–Reach
 
 Attack, Melee: +5; Damage 1d6 bludgeoning or piercing (mace or dagger)
 
 Knightly Combat:  various combat advantages on horseback
 
 Careful Rider: horse takes 1/2 damage in melee
 
 S+5, D+5, C+3, I+3,W+3,Ch+3
 
KNIGHT—CLASS A ( 4 HD Soldier)
 AC: 18 (kite shield, good mail)  HD 4 HP 17
 
 Resistance: 16;  vs. magic 10
 
 Mods: W 0/N+4/S+6
 
 Speed: 30', 50' when mounted on a heavy 
warhorse 
 
 Morale: +7
 
 Stealth  0 Perception 0
 
 Attack, Melee:  +6; Damage:  2d6 slashing(arming sword)
 
 Attack, Melee:  +6; Damage: 2d6 piercing (lance,  double on charge)–Reach
 
 Attack, Melee: +6;  Damage 1d6 bludgeoning or piercing (mace or dagger)
 
 Knightly Combat: various advantages when fighting mounted
 
 Careful Rider: horse takes 1/2 damage in melee
 
 S+6, D+6, C+4, I+4, W+4,Ch+4
 
KNIGHT—BANNERET ( 6 HD Soldier)
 AC: 19 (kite shield, master mail)  HD 6 HP 25
 
 Resistance: 18;  vs. magic 11
 
 Mods: W +1/N+5/S+8
 
 Speed: 30', 50' when mounted on a heavy 
warhorse 
 
 Morale: +9
 
 Stealth  +1 Perception +1
 
 Attack, Melee:  +8  Damage:  2d10 slashing (arming sword)
 
 Attack, Melee:  +8;  Damage: 2d10 piercing (lance, double on charge)–Reach
 
 Attack, Melee: +8;  Damage: 1d10 piercing or bludgeoning (dagger or mace)
 
 Knightly Combat: various advantages when fighting mounted
 
 Careful Rider: horse takes 1/2 damage in melee
 
 Riding Master: advantage to all riding checks and can mount/dismount as quick action
 
 S+8, D+8, C+5, I+5, W+5,Ch+5
 
KNIGHT—CHAMPION ( 8 HD Soldier)
 AC: 19 (kite shield, master mail)  HD 8 HP 33
 
 Resistance: 20;  vs. magic 12
 
 Mods: W +2/N+6/S+10
 
 Speed: 30',  50' when mounted on a heavy 
warhorse 
 
 Morale: +11
 
 Stealth  +2 Perception +2
 
 Attack, Melee:  +10; Damage:  3d8 slashing (arming sword)
 
 Attack, Melee:  +10;  Damage: 3d8 piercing (lance, double on charge)–Reach
 
 Attack, Melee: +10; Damage: 3d4 bludgeoning or piercing (mace or dagger)
 
 Knightly Combat: various advantages when fighting mounted
 
 Careful Rider: horse takes 1/2 damage in melee
 
 Riding Master: advantage to all riding checks and can mount/dismount as quick action
 
 S+10, D+10, C+6, I+6, W+6,Ch+6
 
MIGHTY KNIGHT OF RENOWN ( 10 HD Soldier)
 AC: 19 (kite shield, master mail)  HD 10 HP 41
 
 Resistance: 22;  vs. magic 13
 
 Mods: W +3/N+7/S+12
 
 Speed: 30', 65' when mounted on a heavy 
warhorse 
 
 Morale: +12
 
 Stealth  0 Perception 0
 
 Attack, Melee:  +12; Damage:  3d8+2 slashing (arming sword)
 
 Attack, Melee:  +12;  Damage: 3d8+2  piercing (lance, double on charge)–Reach
 
 Attack, Melee:  +12;  Damage:  3d4+2 bludgeoning or piercing (mace or dagger)
 
 Knightly Combat: various advantages when fighting mounted
 
 Careful Rider: horse takes 1/2 damage in melee
 
 Riding Master: advantage to all riding checks and can mount/dismount as quick action
 
 Tis But a Scratch: resistant to all slashing attacks while wearing armor
 
 S+12 D+12, C+7, I+7, W+7,Ch+7