| Oncidium Trianon (1933) | 01 Jan 1933 | Oncidium Charlesworthii (1908) × Oncidium Georgius Rex |
| Oncidium Spreakley | 01 Jan 1932 | Oncidium Georgius Rex × Oncidium Promerens |
| Oncidium Heroniae | 01 Jan 1932 | Oncidium Georgius Rex × Oncidium Othello (1905) |
| Oncidium Doret | 01 Jan 1931 | Oncidium Aquitania × Oncidium Georgius Rex |
| Oncidium Mrs. Beit | 01 Jan 1931 | Oncidium Georgius Rex × Oncidium Purple Emperor (1922) |
| Oncidium Melchet Glory | 01 Jan 1930 | Oncidium Cooksoniae (1909) × Oncidium Georgius Rex |
| Oncidium Norman | 01 Jan 1930 | Oncidium Aglaon × Oncidium Georgius Rex |
| Oncidium Dione | 01 Jan 1926 | Oncidium Georgius Rex × Oncidium Laurentia |
| Oncidium Astral | 01 Jan 1926 | Oncidium Amabelicity × Oncidium Georgius Rex |
| Oncidium Southgatense | 01 Jan 1926 | Oncidium Georgius Rex × Oncidium Gorizia |
| Oncidium Icaris | 01 Jan 1926 | Oncidium Doreen × Oncidium Georgius Rex |
| Oncidium Joyce II | 01 Jan 1925 | Oncidium Georgius Rex × Oncidium Président Poincaré |
| Oncidium Georgina | 01 Jan 1925 | Oncidium Georgius Rex × Oncidium Rosina |
| Oncidium Moira | 01 Jan 1925 | Oncidium Georgius Rex × Oncidium Vardar |
| Oncidium Ascania | 01 Jan 1925 | Oncidium Antinous (1919) × Oncidium Georgius Rex |
| Oncidium Royal Ascot | 01 Jan 1925 | Oncidium Felicity × Oncidium Georgius Rex |
| Oncidopsis Cybele II | 01 Jan 1925 | Oncidopsis Dora × Oncidium Georgius Rex |
| Oncidium Red Admiral (1925) | 01 Jan 1925 | Oncidium noezlianum × Oncidium Georgius Rex |
| Oncidium Camilla | 01 Nov 1924 | Oncidium Georgius Rex × Oncidium Penelope (1917) |
| Oncidium Isolene | 01 Jan 1924 | Oncidium Georgius Rex × Oncidium Tityus |
| Oncidium Orobus | 01 Jan 1924 | Oncidium Georgius Rex × Oncidium The Czar |
| Oncidium Horus | 01 Jan 1924 | Oncidium Eximium × Oncidium Georgius Rex |
| Oncidium Plinius | 01 Jan 1923 | Oncidium Eximillus × Oncidium Georgius Rex |
| Oncidium Matador (1923) | 01 Jan 1923 | Oncidium Ardentissimum × Oncidium Georgius Rex |
| Oncidium Ursus | 01 Dec 1922 | Oncidium Amabile × Oncidium Georgius Rex |
| Oncidopsis Saint Mungo | 01 Jan 1922 | Miltoniopsis Bleuana × Oncidium Georgius Rex |
| Oncidium Llewellyn | 01 Jun 1921 | Oncidium Amabile × Oncidium Georgius Rex |