inbreeding: THE GODOLPHIN ARABIAN (3x4) - BAY BOLTON (4x5) - SPANKER MARE (5x6) - OLD SPOT MARE (5x6) - GREY HAUTBOY (5x6) - MAKELESS MARE (5x6) - THE DARLEY ARABIAN (5x5) - BYERLEY TURK MARE (5x6) - BASTO (5x5x6) - CURWEN BAY BARB MARE (5x6) - BAY PEG (5x6)