Examples from the Web for swansdown
"Lady Swansdown again, I suppose," says he, with a bored uplifting of his brows.April's Lady|Margaret Wolfe Hungerford
Edward Henry leaped from his chair, and the swansdown quilt swathed his slippered feet.
Although the month was September, and the weather warm even for September, a swansdown quilt lay spread upon his knees.
Swansdown also edged the little violet cloaks which hung from their shoulders.Cornwall's Wonderland|Mabel Quiller-Couch
Mr. Collins unfurled her fan, fringed with swansdown, and proceeded to fan the "large lady."Margaret Capel, v. 3 of 3|Ellen Wallace