- Composed most of the music for Filmation's cartoons from the late 1960s to the early 1980s, usually under the pseudonym "Yvette Blais" (in reality his wife's maiden name). Some of Ellis' earlier Filmation work was under the pseudonyms "George Blais" (his wife's brother's name), "Spencer Raymond" (his middle name followed by his first), "Marc Ellis" (the name of his son, who would later become a composer himself) or "Mark Jeffrey" (a combination of his two son's first names).
- Father of Marc Ellis
- Father of Jeffrey Ellis, an attorney in Los Angeles.
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