This is Marshmellow and his Rider, Kynta.
Character: Kynta (Hobbit Minstrel)
Server: Gladden
WarPony: Marshmellow (light steed)
Hide: Default, white coloring
Body: Light Caparison of the Norcrofts in Evendim Blue
Legs: Light Leggings of the Norcrofts in Evendim Blue
Died to match his rider’s traditional outfit (since lvl 10)