Joybird ( 牝 1932 鹿毛 Bull Dog )
 |-- Songburst ( 牝 1941 黒鹿毛 Blenheim )
 |   `-- Drift Song ( 牝 1948 鹿毛 Heliopolis )
 |   |   |-- Fleet Song ( 牝 1953 鹿毛 Hierocles )
 |   |   `-- Troilus ( 牡 1956 鹿毛 Priam )
 |-- I Declare ( 牝 1944 鹿毛 Heliopolis )
 |   `-- I Salute ( 牝 1950 鹿毛 Brookfield )
 |   |   |-- I Recall ( 牝 1959 鹿毛 Prince John )
 |   |   |-- Intrical ( 牝 1963 鹿毛 Blue Prince )
 |   |   `-- Iyearn ( 牝 1965 鹿毛 Francis S. )
 `-- Blue Charmer ( 牝 1947 鹿毛 Blue Larkspur )
 |   `-- Real Sincere ( 牝 1955 鹿毛 Brookfield )
 |   |   |-- Cutty ( 牝 1969 鹿毛 Smart )
 |   |   `-- Flirt ( 牝 1972 鹿毛 Metropolitan )