Uther.
Next to Turalyon he is one of the people who defined what it was to be a Paladin and a Knight of the Silver Hand.
I feel that as of late Paladins have moved further and further away from the concept of being a Warrior using the Holy Light who embodies the Church and upholds morals and rules of his order to what is just a very generic Warrior who uses the Light.
This problem has been exacerbated by the apparent neutrality of the Order under Tirion.
Alliance Paladins need to be proper Paladins again. Uther exemplified this sense of being a part of an elite Order of the Church.