In the author's marriage record of 1895-04-11 in Toronto, Ontario, Canada, the rank of profession is "Artist" (29 years old).
First known magazine with picture notes by H. Marmaduke Russell at this moment is The Fly Leaf, No. 4, VOL. 1, March 1896 [--Zapp, 2024-08-02]
[According to dime novel scholar J. Randolph Cox, most of the covers for periodicals published during the early 1900s were drawn by Charles L. Wrenn, Marmaduke Russell, Ed Johnson, and J. A. Cahill.]
Naturalized in the United States of America on 1941-03-17 under the name of Mark Russell.