Disambiguation: adoptive mother of Clark Kent
First published in: 1939
First appeared and named Mary in Superman (DC, 1939 series) #1 ([Summer] 1939). First named Marthe in Superboy (DC, 1949 series) #12 (January-February 1951). First named Martha in Adventure Comics (DC, 1938 series) #169 (October 1951). Maiden name was established as "Clark" in Superman (DC, 1939 series) #53 (July-August 1948), as “Hudson” in Superman (DC, 1939 series) #141 (November 1960), and as “Hudson Clark” in the letters page of Superman (DC, 1939 series) #148 (October 1961).
Link: https://en.wikipedia.org/wiki/Jonathan_and_Martha_Kent