siblings of Double Quick xx

half siblings maternal 2 half siblings paternal 58

half siblings maternal

broodmare Sanction xx (Thoroughbred, 1912, from Santoi xx)

Sanction xx
gender-female
1912

Santoi xx / Tarporley xx

stallion Derring-Doe xx (Thoroughbred, 1914, from Desmond xx)

Derring-Doe xx
gender-male
1914

Desmond xx / Tarporley xx