siblings of Red Letter Day xx

half siblings maternal 3 half siblings paternal 18

half siblings maternal

broodmare Exclusive xx (Thoroughbred, 1953, from Shut Out xx)

Exclusive xx
gender-female
1953

Shut Out xx / Pilate xx

broodmare Grass Shack xx (Thoroughbred, 1951, from Polynesian xx)

Grass Shack xx
gender-female
1951

Polynesian xx / Pilate xx

broodmare At the Summit xx (Thoroughbred, 1955, from Hill Prince xx)

At the Summit xx
gender-female
1955

Hill Prince xx / Pilate xx