Origin: 1860–65; after the sideburns worn by actor Edward A. Sothern as Lord Dundreary, a character in the play Our American Cousin (1858) by Tom Taylor
1862, long, flowing whiskers, like those worn by actor E.A. Sothern (1826-81) while playing Lord Dundreary, witless, indolent chief character in Eng. dramatist Tom Taylor's play "Our American Cousin" (1858).