siblings of Windmill Hill xx

half siblings maternal 2 half siblings paternal 10

half siblings maternal

stallion Ishan xx (Thoroughbred, 1958, from Nantallah xx)

Ishan xx
gender-male
1958

Nantallah xx / Hill Prince xx

stallion Hardboy xx (Thoroughbred, 1968, from Hard Run xx)

Hardboy xx
gender-male
1968

Hard Run xx / Hill Prince xx