siblings of Ebb and Flow xx

half siblings maternal 2 half siblings paternal 137
  half siblings maternal (2)
  half siblings maternal (2)
  half siblings paternal (137)

half siblings maternal

stallion Gulf Stream xx (Thoroughbred, 1943, from Hyperion xx)

Gulf Stream xx
gender-male
1943

Hyperion xx / Fairway xx

horse Estuary xx (Thoroughbred, 1938, from Orwell xx)

Estuary xx
gender-female
1938

Orwell xx / Fairway xx