The Nonius is a horse breed available in Star Stable: The Winter Rider.
"The Nonius is a persistent and willing horse developed by Hungarian horse breeders during the 1800's. The breeding resulted in a powerful all-round riding horse that can be used for all types of English riding disciplines. It has a smooth stride and is normally chestnut or black." - Star Stable: The Winter Rider
A Nonius is available in Star Stable: The Winter Rider, at Meander Stables. It comes in one color, Dark Brown.