| Sons | Grand-sons | |
Royalcote Susan   Royalcote Grit x Launa (usa 1909) |
Royalcote Alberta Mackworth Bertie (form Mackworth Albert) (uk-usa) x Royalcote Susan |
|
| Royalcote Lady Mackworth Bertie (form Mackworth Albert) (uk-usa) x Royalcote Susan |
| Sons | Grand-sons | |
| Royalcote Susan Royalcote Grit x Launa (usa 1909) |
Royalcote Alberta Mackworth Bertie (form Mackworth Albert) (uk-usa) x Royalcote Susan |
|
| Royalcote Lady Mackworth Bertie (form Mackworth Albert) (uk-usa) x Royalcote Susan |