Grinch

google

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1960s: the name of a character in the children's story How the Grinch Stole Christmas (1957) by Dr. Seuss.

wiktionary

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Named after the main character in a children's book by Dr. Seuss, How the Grinch Stole Christmas! (1957).

etymonline

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Grinch (n.)

"spoilsport;" all usages trace to Dr. Seuss's 1957 book "How the Grinch Stole Christmas." Kipling used grinching (1892) in reference to a harsh, grating noise; and Grinch had been used as the surname of severe characters in fiction at least since 1903.