siblings of Monarch xx

half siblings maternal 2 half siblings paternal 63

half siblings maternal

horse Galloper King xx (Thoroughbred, 1923, from Galloper Light xx)

Galloper King xx
gender-male
1923

Galloper Light xx / Black Duck xx

broodmare Tetrarch's Maid xx (Thoroughbred, 1920, from The Tetrarch xx)

Tetrarch's Maid xx
gender-female
1920

The Tetrarch xx / Black Duck xx