siblings of Cos xx

half siblings maternal 4 half siblings paternal 20

half siblings maternal

broodmare Eos xx (Thoroughbred, 1913, from Orby xx)

Eos xx
gender-female
1913

Orby xx / St. Serf xx

broodmare Catspaw xx (Thoroughbred, 1919, from Friar Marcus xx)

Catspaw xx
gender-female
1919

Friar Marcus xx / St. Serf xx

broodmare Ventura xx (Thoroughbred, 1911, from St. Amant xx)

Ventura xx
gender-female
1911

St. Amant xx / St. Serf xx

broodmare Cnidos xx (Thoroughbred, 1925, from Orpheus xx)

Cnidos xx
gender-female
1925

Orpheus xx / St. Serf xx