inbreeding: REGULUS (3x4) - THE GODOLPHIN ARABIAN (4x4x5x5) - PARTNER (4x4x6) - GREY ROBINSON (4x5) - GREYHOUND MARE (4x6) - BARTLET'S CHILDERS (5x6) - SNAKE MARE (5x5x6) - JIGG (5x5) - SISTER TO MIXBURY (5x5) - BAY BOLTON (5x6) - DARLEY ARABIAN MARE (5x6) - THE DARLEY ARABIAN (6x6) - SNAKE (6x6) - FLYING CHILDERS (6x6) - THE BYERLEY TURK (6x6) - SPANKER MARE (6x6) - CURWEN BAY BARB (6x6) - OLD SPOT MARE (6x6)