Pedigree Chart of Coolgreany, 3 W-GYY, Carncairn Daffodils, Northern Ireland, 1967
| Silver Plane | |||||||
| Sylvia O'Neill | |||||||
| Silver Coin | |||||||
| N. poeticus var. hellenicus | |||||||
| Seedling | |||||||
| unknown | |||||||
| Coolgreany | |||||||
| Silver Plane | |||||||
| Chinese White | |||||||
| Silver Coin | |||||||
| N. poeticus var. hellenicus | |||||||
| Seedling | |||||||
| unknown |