| Sons | Grand-sons | |
Markham Okay   Markham Supreme (uk-usa) x Pitland Majorie |
Brindilla (usa)  Markham Okay x Lady Maud I I (usa) |
|
| Dons O' Kay Markham Okay x Markham Doris (uk-usa) |
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| Lucy Gray (usa) Markham Okay x Nora Cerberus |
Queen Ann I I I Deodora Monk x Lucy Gray (usa) |
|
| Markham Superior Markham Okay x Lady Maud I I (usa) |
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| Peg Markham Markham Okay x Nova Cerberus |
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| Sumerton Captain Markham Okay x Lady Maud I I (usa) |