Ian Denney is a US artist.

It is close to Hearth’s Warming Eve in Equestria, our hero, Ian, has been having thoughts of an old lullaby from a distant memory of his lost past.
Questioning if he was born, human or pony, he turns to Twilight and Spike for answers.
Frustrated, he goes to the Castle of the Two Sisters to learn more.
As he does so, he learns that the past has a life of its own.