David Crane no relation comics
DC Comics
Mortimer began working for DC Comics in 1945, and quickly became a cover artist for comics featuring Superman, Superboy and Batman. His first known comics work is as the penciler and inker of the 12-page lead Batman story, "The Batman Goes Broke" by writer Don Cameron, in Detective Comics #105 (Nov. 1945); contractually credited to Bob Kane, it is also signed "Mortimer." The introduction of Batman's Batboat in Detective Comics #110 (April 1946) was another Cameron/Mortimer collaboration. Mortimer launched a Robin feature in Star-Spangled Comics #65 (Feb. 1947).He succeeded Wayne Boring on the Superman newspaper strip in 1949, leaving it in 1956 to create the adventure strip David Crane for the Prentice-Hall Syndicate. Following his run on that series, Mortimer produced the Larry Bannon strip for the Toronto Star  beginning in 1960.During the same period, Mortimer returned to DC and worked on a large variety of comics, ranging from humor titles such as Swing with Scooter to superhero features starring the Legion of Super-Heroes and Supergirl. He and writer Arnold Drake co-created Stanley and His Monster in 1965.
no relation