E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Gladstone Bag (A).
A black leather bag of various sizes, all convenient to be hand-carried. These bags have two handles, and are made so as not to touch the ground, like the older carpet bags. Called Gladstone in compliment to W. E. Gladstone, many years leader of the Liberal party.