siblings of Thunderbolt xx

half siblings maternal 2 half siblings paternal 170

half siblings maternal

stallion Pathfinder xx (Thoroughbred, 1864, from Thormanby xx)

Pathfinder xx
gender-male
1864

Thormanby xx / Red Deer xx

horse Romeo xx (Thoroughbred, 1860, from Lightning xx)

Romeo xx
gender-male
1860

Lightning xx / Red Deer xx