Perth

Ser Perth is a knight in Arl Eamon Guerrein's service.

Involved In
He is one of the Arl's knights that will fight against the Devouring Corpses attacking Redcliffe Village. He fights alongside the Warden and their party if they help defend Redcliffe. You can talk to him about oil you can find in the General Store. You can tell him that you will make your stand there, that will trigger the Nightfall and a further step in A Village Under Siege.

Perth's Armour
Ser Perth's armour is rather curious to be noted. At first glance it would seem like regular heavy armour that will be available to wear a bit later in the game (Heavy Steel Plate armour), but if you start another playthrough before completing your current one - your new playthrough will have him in different armour, this could possibly be placed on being at a different level and therefore his armour being leveled up to match the current level of enemies but this is not the case as if you complete the game and then on a new playthrough come to Redcliffe he will be wearing the armour that King Cailan wears.