siblings of Spring Tune xx

half siblings maternal 3 half siblings paternal 42
  half siblings maternal (3)
  half siblings maternal (3)
  half siblings paternal (42)

half siblings maternal

horse Sonata xx (Thoroughbred, 1957, from Hyperion xx)

Sonata xx
gender-female
1957

Hyperion xx / Sir Gallahad III xx

horse Spring Sun xx (Thoroughbred, 1959, from Hyperion xx)

Spring Sun xx
gender-male
1959

Hyperion xx / Sir Gallahad III xx

stallion Bold Native xx (Thoroughbred, 1965, from Raise A Native xx)

Bold Native xx
gender-male
1965

Raise A Native xx / Sir Gallahad III xx