siblings of Great Union xx

half siblings maternal 2 half siblings paternal 148

half siblings maternal

broodmare Gradation xx (Thoroughbred, 1936, from Gallant Fox xx)

Gradation xx
gender-female
1936

Gallant Fox xx / American Flag xx

broodmare Sister Union xx (Thoroughbred, 1938, from Blenheim II xx)

Sister Union xx
gender-female
1938

Blenheim II xx / American Flag xx