In 1957
Prudence Petitpas was published in
Tintin, under recommendation of his neighbour
Raymond Macherot. The series centered around an old lady who solved crimes. Maréchal purposefully choose for a senior character to stand out among other comics series who usually had younger protagonists. Originally the series was published in shorter stories, later developed into longer adventures. The series was terminated in 1967 so that Maréchal could concentrate better on his daytime job as a Spanish teacher in
Verviers. ==TV animated series==