Katherine Eleanor Conway (pen name, Mercedes; September 6, 1853 - January 2, 1927) was an American journalist, editor, and poet.

There were two siblings, including a brother and a sister, Mary Conway, who founded the Colegio Americano, affiliated with the University of Argentina, in Buenos Aires.

In her aspirations, she was assisted by her sympathetic friend and adviser, Bishop Bernard John McQuaid, of Rochester, New York.

After an opportune vacancy occurred with the staff of The Pilot, O'Reilly offered it to Conway, who accepted and started her new job in the autumn of 1883.

Conway also edited Clara Erskine Clement Waters' collection, called Christian Symbols and Stories of the Saints as Illustrated in Art.

In the spring of 1891, Conway was invited to give before the Woman's Council in Washington, D.C., her paper upon "The Literature of Moral Loveliness".

Conway was chosen president of the press department of the Isabella Association, in connection with the World's Columbian Exposition in Chicago.