| 馬名 | 性別 | 父 | 母 | 生年 |
|---|---|---|---|---|
| On a Broomstick | 牝 | Garthorn | Sweet Freepet | 1988 |
| Near the Limit | 牡 | Garthorn | Near Lyn | 1988 |
| French Pancakes | 牝 | Garthorn | Morning Has Broken | 1988 |
| Starthorne | 牝 | Garthorn | Sweet Star | 1988 |
| Classic Intent | 牡 | Garthorn | Sugar Del | 1988 |
| Munch Bunny | 牝 | Garthorn | Cazeez | 1988 |
| Terrorthorn | 騸 | Garthorn | Terrorize | 1989 |
| Wiley and Wise | 牝 | Garthorn | Wise and Happy | 1989 |
| Dr. Garthorn | 騸 | Garthorn | Nurse Lyphard | 1989 |
| Covert Activities | 牡 | Garthorn | Discreet Pleasure | 1989 |
| So Fortunate | 牝 | Garthorn | Delicate Vine | 1989 |
| Believe the Knight | 牡 | Garthorn | Class Night | 1989 |
| Garthorn's Heiress | 牝 | Garthorn | Another Penny | 1989 |
| Believe in Sugar | 牝 | Garthorn | Sugar Del | 1989 |
| Guidance | 牝 | Garthorn | Holiday Dancer | 1989 |
| Chief Speaker | 牡 | Garthorn | Speak Up Now | 1989 |
| Three Dreams | 騸 | Garthorn | Tunefull Ann | 1989 |
| Duper | 牝 | Garthorn | Moa | 1990 |
| G. Thorn | 牡 | Garthorn | Tonka | 1990 |
| Minnekonda | 牝 | Garthorn | Minnetonka | 1990 |