Dragonblade
Adventurer
It seems like playing such a character in such a game would an exercise in frustration. Before playing, I would suggest a looooong talk on what exactly you can and cannot do in great detail so there are no surprises later.
I personally subscribe to the notion of the paladin as a divinely sanctioned judge, jury, and executioner. "Kill all the infidels" inquisitorial zealot types. Now those are fun characters to play.
But for some good inspiration on playing a courtly paladin who is also not so hamstringed in their badassness, I would check out the character of Sir Mandorallen in David Eddings Belgariad series. He is a good example of a courtly knight who is bound by the rules of chivalry but who is also an unstoppable engine of destruction on the battlefield.
For the ultimate literary example of a LG paladin, I think Galad from the Wheel of Time works well. Although, Galad doesn't follow the courtly chivalrous model of paladin as knight in shining armor. He is more of the zealous crusader type.
I personally subscribe to the notion of the paladin as a divinely sanctioned judge, jury, and executioner. "Kill all the infidels" inquisitorial zealot types. Now those are fun characters to play.

But for some good inspiration on playing a courtly paladin who is also not so hamstringed in their badassness, I would check out the character of Sir Mandorallen in David Eddings Belgariad series. He is a good example of a courtly knight who is bound by the rules of chivalry but who is also an unstoppable engine of destruction on the battlefield.
For the ultimate literary example of a LG paladin, I think Galad from the Wheel of Time works well. Although, Galad doesn't follow the courtly chivalrous model of paladin as knight in shining armor. He is more of the zealous crusader type.