| Role | Voice Part | Classification |
|---|---|---|
| Sir Marmaduke | Baritone | L |
| Alexis | Tenor | L |
| John Wellington Wells | Baritone | L |
| Aline | Soprano | L |
| Constance | Soprano | F |
| Doctor Daly | Tenor | F |
| Lady Sangazure | Contralto | S |
| Mrs. Partlett | Contralto | S |
| Notary | Bass | B |
| Minimum Chorus: 24 | ||
| Divisi: SATB |