From Wiktionary, the free dictionary
From trumpeter + -ess.
trumpetress (plural trumpetresses)
- (rare) A woman who plays the trumpet; a female trumpeter.
1832, Day: A Journal of Literature, Fine Arts, Fashions, Etc, page 276:Fame has for once at least been not a false trumpetress, Miss FANNY KEMBLE's Tragedy of "Francis the First" has proved eminently successful.