This horse was Roy Rogers`s Trigger Jr. Breeder: O. C. Barker, Readyville, Tennessee Blaze 4 wht stockings Also registered PHBA 4055; later cancelled and renamed TRIGGER JR by Roy Rogers Although his sire was a well known champagne, this horse was palomino, not champagne. Member of the Tennessee Walking Horse Hall of Fame.
http://www.westwoodfarms.net/reference/allensgoldzephyr.html
photo from westwoodfarms