inbreeding: PARTNER (3x3x3) - BROCKLESBY BETTY (3x5) - JIGG (4x4x4) - SISTER TO MIXBURY (4x4x4) - CURWEN BAY BARB (4x5x5x5x6) - HOBBY MARE (4x6) - THE BYERLEY TURK (5x5x5) - SPANKER MARE (5x5x5) - OLD SPOT MARE (5x5x5) - SPANKER (6x6x6) - OLD MOROCCO MARE (6x6x6)