Family B10
Half Bred Families B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B13 B14 B15 B16 B17 B18 B19 B20 B21 B22 B23 B24 B25 B26	PETWORTH MARE (f Petworth)      Springwire (f Sertorius)           Defence Mare (br f 1840 Defence)                Mr Sykes (b c 1850 Sir Tatton Sykes)                Sir Tatton Sykes Mare (ch f 1851 Sir Tatton Sykes)                     Petra (b f 1856 Tadmor)