siblings of Isaac of York xx

half siblings paternal

broodmare Heala Ray xx (Thoroughbred, 1943, from Hyperion xx)

Heala Ray xx

horse Heavenly Song xx (Thoroughbred, 1954, from Hyperion xx)

Heavenly Song xx

horse Heavenly Twin xx (Thoroughbred, 1941, from Hyperion xx)

Heavenly Twin xx

horse Heliophyte xx (Thoroughbred, 1948, from Hyperion xx)

Heliophyte xx

stallion Helioscope xx (Thoroughbred, 1946, from Hyperion xx)

Helioscope xx

horse Herald xx (Thoroughbred, 1940, from Hyperion xx)

Herald xx

horse Herophilus xx (Thoroughbred, 1944, from Hyperion xx)

Herophilus xx

horse Hesiod xx (Thoroughbred, 1954, from Hyperion xx)

Hesiod xx

horse Hesione xx (Thoroughbred, 1959, from Hyperion xx)

Hesione xx

horse Hiawatha xx (Thoroughbred, 1940, from Hyperion xx)

Hiawatha xx

horse High Bandit xx (Thoroughbred, 1947, from Hyperion xx)

High Bandit xx

horse High Stakes xx (Thoroughbred, 1942, from Hyperion xx)

High Stakes xx