descendants of Swing On xx

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stallion Seabiscuit xx (Thoroughbred, 1933, from Hard Tack xx)

Seabiscuit xx
gender-male
1933

Hard Tack xx / Whisk Broom xx

broodmare Brown Biscuit xx (Thoroughbred, 1936, from Sir Andrew xx)

Brown Biscuit xx
gender-female
1936

Sir Andrew xx / Whisk Broom xx