Leopard - black spots all over white body
https://appaloosaterritory.com/Articles/thesullyhorses.html
The Sully Appaloosas
Started by Lee Warne with his Sundance stallion, Bambi E F-2407.
The name Sully comes from where Mr Warne lived - Sully County, South Dakota. The county is named after General Alfred Sully who built Fort Sully.