I think the horses name is Pie.
International Velvet's birth name is Susan Bottomly.
It is the name of the horse in the 1978 movie International Velvet, sequel to National Velvet 1944, which Sarah Brown rides to an Olympic Three Day Eventing gold medal.
Arizona Pie
A Girl, national velvet is her nick name, and in the movie international velvet, velvet is the aunt.
Arizona Pie was a chestnut Thoroughbred horse. Arizona Pie is the descendant of The Pie, the horse that was featured in the movie, National Velvet.
The Pie (pye)
Arizona pie
International Velvet was born in 1950, in Boston, Massachusetts, USA.
In National Velvet, Velvet Brown, played by Elizabeth Taylor, names the horse "The Pie", after the horses' owner refers to him as a "murderous pirate."
A girl who loves horses
Velvet McIntyre's birth name is Velvet Mykietowich.
National Velvet