Pedigree Chart of Kingsworthy, 2 Y-Y, J. Lionel Richardson, Ireland, 1963
| Monarch | |||||||
| Cleopatra | |||||||
| Royalist | |||||||
| King Alfred | |||||||
| Broadford | |||||||
| Lord Roberts | |||||||
| Kingscourt | |||||||
| Crocus | |||||||
| Kingsworthy | |||||||
| Firebrand | |||||||
| Hospodar | |||||||
| King Alfred | |||||||
| Marksman | |||||||
| A.M. Wilson 2Y-R seedling | |||||||
| Ceylon | |||||||
| Firebrand | |||||||
| Hospodar | |||||||
| King Alfred | |||||||
| Diolite | |||||||
| A.M. Wilson 2Y-R seedling |