Castilly BTB carries one of the most respected combinations in modern Holstein breeding. By Casall, the dominant force on the WBFSH jumping sire rankings of the past decade, out of a Contendro I mare. The dam line traces back to one of Holstein's most successful mare families, with horses competing through to 1.60m level across multiple generations dating back to the 1970s.

Approved in Holstein, Oldenburg, and Westfalen, and awarded premier status at the Swedish Bruksprov in 2026, Castilly has competed at the 1.50m level in recent seasons. In September 2025 he was presented at Sires of the World in Lanaken, one of the most respected platforms for jumping stallions internationally.

His ridden jumping score of 8.75 was anchored by an exceptional 9.0 for temperament and overall impression, with AVN describing him as well balanced, easy to regulate, intelligent over fences, and consistent jump after jump. Test rider Paraic Kenny scored him 8.5, calling him a horse that "really knows his job."

A stallion of size, substance, and proven mind.