siblings of Protonico xx

half siblings paternal

horse United xx (Thoroughbred, 2015, from Giant's Causeway xx)

United xx

broodmare First Passage xx (Thoroughbred, 2006, from Giant's Causeway xx)

First Passage xx

stallion Cowboy Cal xx (Thoroughbred, 2005, from Giant's Causeway xx)

Cowboy Cal xx

broodmare Wait Til Dawn xx (Thoroughbred, 2009, from Giant's Causeway xx)

Wait Til Dawn xx

broodmare Irish Mission xx (Thoroughbred, 2009, from Giant's Causeway xx)

Irish Mission xx

broodmare Charm the Giant xx (Thoroughbred, 2002, from Giant's Causeway xx)

Charm the Giant xx

broodmare Harriett Lane xx (Thoroughbred, 2003, from Giant's Causeway xx)

Harriett Lane xx

horse Aster Pegasus xx (Thoroughbred, 2016, from Giant's Causeway xx)

Aster Pegasus xx

broodmare My Sugar Bear xx (Thoroughbred, 2007, from Giant's Causeway xx)

My Sugar Bear xx

broodmare Julia Tuttle xx (Thoroughbred, 2005, from Giant's Causeway xx)

Julia Tuttle xx

stallion Pontiff xx (Thoroughbred, 2010, from Giant's Causeway xx)

Pontiff xx

broodmare Plante Rare xx (Thoroughbred, 2002, from Giant's Causeway xx)

Plante Rare xx