G.G. Pendarves
G.G. Pendarves was the nom de plume of Gladys Gordon Trenery. Time has erased most traces of her other than her stories, although there are some excellent theories over on the Tellers of Weird Tales blog.
G.G. Trenery contributed “Yesterday, Today, and Tomorrow” to The Horn Book for November 1931. Otherwise, all of her known stories were in Argosy All-Story Magazine, The Magic Carpet Magazine, Oriental Stories, and Weird Tales, all from 1926 to 1939. Her last three stories in “The Unique Magazine” were published posthumously, as Gladys G. Trenery died on August 1, 1938. That sad event is lost among the deaths of Robert E. Howard and H.P. Lovecraft from the previous two years.