siblings of MacGregor xx

half siblings maternal 2 half siblings paternal 76
  half siblings maternal (2)
  half siblings maternal (2)
  half siblings paternal (76)

half siblings maternal

broodmare Ivy xx (Thoroughbred, 1874, from King of the Forest xx)

Ivy xx
gender-female
1874

King of the Forest xx / The Fallow Buck xx

stallion Mars xx (Thoroughbred, 1865, from Marsyas xx)

Mars xx
gender-male
1865

Marsyas xx / The Fallow Buck xx