Sirius is a characterful colt, from strong bloodlines. Sezuan's Donnerhall, is by triple world young horse champion Sezuan and on his mother line brings the classic blood of Sir Donnerhall and Don Schufro. Sirius's dam Seren, through her damline, is related to the licensed stallion Secret and her sire Spoercken sold for the top price at the 2010 stallion market in Verden.